Home / 21,631.56-29,807.24-15,957.32

Finding the Fourth Proportional to 21,631.56, 29,807.24 and 15,957.32

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Solution

The fourth proportional to 21,631.56, 29,807.24 and 15,957.32 is: 21,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.56 : 29,807.24 = 15,957.32 : x
  2. Step 2: Convert to fraction form
    21,631.56/29,807.24 = 15,957.32/x
  3. Step 3: Cross multiply
    21,631.56x = 29,807.24 × 15,957.32
  4. Step 4: Simplify right side
    21,631.56x = 475,643,667.00
  5. Step 5: Solve for x
    x = 475,643,667.00/21,631.56
  6. Step 6: Final answer
    x = 21,988.41

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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.