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Finding the Fourth Proportional to 9,472.47, 13,077.61 and 8,421.63

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Solution

The fourth proportional to 9,472.47, 13,077.61 and 8,421.63 is: 11,626.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,472.47 : 13,077.61 = 8,421.63 : x
  2. Step 2: Convert to fraction form
    9,472.47/13,077.61 = 8,421.63/x
  3. Step 3: Cross multiply
    9,472.47x = 13,077.61 × 8,421.63
  4. Step 4: Simplify right side
    9,472.47x = 110,134,792.70
  5. Step 5: Solve for x
    x = 110,134,792.70/9,472.47
  6. Step 6: Final answer
    x = 11,626.83

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Double scale
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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.