Home / 28,432.65-39,235.29-15,686.01

Finding the Fourth Proportional to 28,432.65, 39,235.29 and 15,686.01

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Solution

The fourth proportional to 28,432.65, 39,235.29 and 15,686.01 is: 21,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.65 : 39,235.29 = 15,686.01 : x
  2. Step 2: Convert to fraction form
    28,432.65/39,235.29 = 15,686.01/x
  3. Step 3: Cross multiply
    28,432.65x = 39,235.29 × 15,686.01
  4. Step 4: Simplify right side
    28,432.65x = 615,445,151.29
  5. Step 5: Solve for x
    x = 615,445,151.29/28,432.65
  6. Step 6: Final answer
    x = 21,645.72

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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.