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Finding the Fourth Proportional to 14,704.74, 20,292.71 and 7,990.47

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Solution

The fourth proportional to 14,704.74, 20,292.71 and 7,990.47 is: 11,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,704.74 : 20,292.71 = 7,990.47 : x
  2. Step 2: Convert to fraction form
    14,704.74/20,292.71 = 7,990.47/x
  3. Step 3: Cross multiply
    14,704.74x = 20,292.71 × 7,990.47
  4. Step 4: Simplify right side
    14,704.74x = 162,148,250.52
  5. Step 5: Solve for x
    x = 162,148,250.52/14,704.74
  6. Step 6: Final answer
    x = 11,026.94

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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.