Home / 15,600.08-21,521.16-9,308.72

Finding the Fourth Proportional to 15,600.08, 21,521.16 and 9,308.72

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Solution

The fourth proportional to 15,600.08, 21,521.16 and 9,308.72 is: 12,841.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,600.08 : 21,521.16 = 9,308.72 : x
  2. Step 2: Convert to fraction form
    15,600.08/21,521.16 = 9,308.72/x
  3. Step 3: Cross multiply
    15,600.08x = 21,521.16 × 9,308.72
  4. Step 4: Simplify right side
    15,600.08x = 200,334,452.52
  5. Step 5: Solve for x
    x = 200,334,452.52/15,600.08
  6. Step 6: Final answer
    x = 12,841.89

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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.