Home / 15,724.04-21,585.45-15,576.36

Finding the Fourth Proportional to 15,724.04, 21,585.45 and 15,576.36

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Solution

The fourth proportional to 15,724.04, 21,585.45 and 15,576.36 is: 21,382.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.04 : 21,585.45 = 15,576.36 : x
  2. Step 2: Convert to fraction form
    15,724.04/21,585.45 = 15,576.36/x
  3. Step 3: Cross multiply
    15,724.04x = 21,585.45 × 15,576.36
  4. Step 4: Simplify right side
    15,724.04x = 336,222,739.96
  5. Step 5: Solve for x
    x = 336,222,739.96/15,724.04
  6. Step 6: Final answer
    x = 21,382.72

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Half scale
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Double scale
Find fourth proportional to 15,725.04, 21,586.82 and 15,577.36
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.