Home / 28,252.65-38,989.15-15,507.02

Finding the Fourth Proportional to 28,252.65, 38,989.15 and 15,507.02

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Solution

The fourth proportional to 28,252.65, 38,989.15 and 15,507.02 is: 21,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.65 : 38,989.15 = 15,507.02 : x
  2. Step 2: Convert to fraction form
    28,252.65/38,989.15 = 15,507.02/x
  3. Step 3: Cross multiply
    28,252.65x = 38,989.15 × 15,507.02
  4. Step 4: Simplify right side
    28,252.65x = 604,605,451.30
  5. Step 5: Solve for x
    x = 604,605,451.30/28,252.65
  6. Step 6: Final answer
    x = 21,399.96

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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.