Home / 15,752.08-21,717.60-12,909.04

Finding the Fourth Proportional to 15,752.08, 21,717.60 and 12,909.04

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Solution

The fourth proportional to 15,752.08, 21,717.60 and 12,909.04 is: 17,797.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,752.08 : 21,717.60 = 12,909.04 : x
  2. Step 2: Convert to fraction form
    15,752.08/21,717.60 = 12,909.04/x
  3. Step 3: Cross multiply
    15,752.08x = 21,717.60 × 12,909.04
  4. Step 4: Simplify right side
    15,752.08x = 280,353,367.10
  5. Step 5: Solve for x
    x = 280,353,367.10/15,752.08
  6. Step 6: Final answer
    x = 17,797.86

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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.