Home / 15,417.05-21,275.60-8,702.96

Finding the Fourth Proportional to 15,417.05, 21,275.60 and 8,702.96

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Solution

The fourth proportional to 15,417.05, 21,275.60 and 8,702.96 is: 12,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.05 : 21,275.60 = 8,702.96 : x
  2. Step 2: Convert to fraction form
    15,417.05/21,275.60 = 8,702.96/x
  3. Step 3: Cross multiply
    15,417.05x = 21,275.60 × 8,702.96
  4. Step 4: Simplify right side
    15,417.05x = 185,160,695.78
  5. Step 5: Solve for x
    x = 185,160,695.78/15,417.05
  6. Step 6: Final answer
    x = 12,010.12

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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.