Home / 15,176.61-20,931.35-12,744.59

Finding the Fourth Proportional to 15,176.61, 20,931.35 and 12,744.59

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Solution

The fourth proportional to 15,176.61, 20,931.35 and 12,744.59 is: 17,577.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.61 : 20,931.35 = 12,744.59 : x
  2. Step 2: Convert to fraction form
    15,176.61/20,931.35 = 12,744.59/x
  3. Step 3: Cross multiply
    15,176.61x = 20,931.35 × 12,744.59
  4. Step 4: Simplify right side
    15,176.61x = 266,761,305.52
  5. Step 5: Solve for x
    x = 266,761,305.52/15,176.61
  6. Step 6: Final answer
    x = 17,577.13

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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.