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Finding the Fourth Proportional to 10,060.80, 15,091.20 and 4,216.80

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Solution

The fourth proportional to 10,060.80, 15,091.20 and 4,216.80 is: 6,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,060.80 : 15,091.20 = 4,216.80 : x
  2. Step 2: Convert to fraction form
    10,060.80/15,091.20 = 4,216.80/x
  3. Step 3: Cross multiply
    10,060.80x = 15,091.20 × 4,216.80
  4. Step 4: Simplify right side
    10,060.80x = 63,636,572.16
  5. Step 5: Solve for x
    x = 63,636,572.16/10,060.80
  6. Step 6: Final answer
    x = 6,325.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.