Home / 15,516.75-21,411.49-8,800.23

Finding the Fourth Proportional to 15,516.75, 21,411.49 and 8,800.23

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Solution

The fourth proportional to 15,516.75, 21,411.49 and 8,800.23 is: 12,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.75 : 21,411.49 = 8,800.23 : x
  2. Step 2: Convert to fraction form
    15,516.75/21,411.49 = 8,800.23/x
  3. Step 3: Cross multiply
    15,516.75x = 21,411.49 × 8,800.23
  4. Step 4: Simplify right side
    15,516.75x = 188,426,036.64
  5. Step 5: Solve for x
    x = 188,426,036.64/15,516.75
  6. Step 6: Final answer
    x = 12,143.40

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Half scale
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Double scale
Find fourth proportional to 15,517.75, 21,412.87 and 8,801.23
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.