Home / 25,681.96-35,445.17-15,613.55

Finding the Fourth Proportional to 25,681.96, 35,445.17 and 15,613.55

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Solution

The fourth proportional to 25,681.96, 35,445.17 and 15,613.55 is: 21,549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,681.96 : 35,445.17 = 15,613.55 : x
  2. Step 2: Convert to fraction form
    25,681.96/35,445.17 = 15,613.55/x
  3. Step 3: Cross multiply
    25,681.96x = 35,445.17 × 15,613.55
  4. Step 4: Simplify right side
    25,681.96x = 553,424,934.05
  5. Step 5: Solve for x
    x = 553,424,934.05/25,681.96
  6. Step 6: Final answer
    x = 21,549.17

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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.