Home / 15,681.60-21,627.68-11,432.64

Finding the Fourth Proportional to 15,681.60, 21,627.68 and 11,432.64

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Solution

The fourth proportional to 15,681.60, 21,627.68 and 11,432.64 is: 15,767.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.60 : 21,627.68 = 11,432.64 : x
  2. Step 2: Convert to fraction form
    15,681.60/21,627.68 = 11,432.64/x
  3. Step 3: Cross multiply
    15,681.60x = 21,627.68 × 11,432.64
  4. Step 4: Simplify right side
    15,681.60x = 247,261,479.48
  5. Step 5: Solve for x
    x = 247,261,479.48/15,681.60
  6. Step 6: Final answer
    x = 15,767.62

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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.