Home / 21,269.32-29,280.66-15,955.24

Finding the Fourth Proportional to 21,269.32, 29,280.66 and 15,955.24

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Solution

The fourth proportional to 21,269.32, 29,280.66 and 15,955.24 is: 21,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.32 : 29,280.66 = 15,955.24 : x
  2. Step 2: Convert to fraction form
    21,269.32/29,280.66 = 15,955.24/x
  3. Step 3: Cross multiply
    21,269.32x = 29,280.66 × 15,955.24
  4. Step 4: Simplify right side
    21,269.32x = 467,179,957.66
  5. Step 5: Solve for x
    x = 467,179,957.66/21,269.32
  6. Step 6: Final answer
    x = 21,964.97

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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.