Home / 28,680.60-39,585.57-15,938.16

Finding the Fourth Proportional to 28,680.60, 39,585.57 and 15,938.16

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Solution

The fourth proportional to 28,680.60, 39,585.57 and 15,938.16 is: 21,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.60 : 39,585.57 = 15,938.16 : x
  2. Step 2: Convert to fraction form
    28,680.60/39,585.57 = 15,938.16/x
  3. Step 3: Cross multiply
    28,680.60x = 39,585.57 × 15,938.16
  4. Step 4: Simplify right side
    28,680.60x = 630,921,148.35
  5. Step 5: Solve for x
    x = 630,921,148.35/28,680.60
  6. Step 6: Final answer
    x = 21,998.19

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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.