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Finding the Fourth Proportional to 15,012.52, 20,703.78 and 9,701.74

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Solution

The fourth proportional to 15,012.52, 20,703.78 and 9,701.74 is: 13,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012.52 : 20,703.78 = 9,701.74 : x
  2. Step 2: Convert to fraction form
    15,012.52/20,703.78 = 9,701.74/x
  3. Step 3: Cross multiply
    15,012.52x = 20,703.78 × 9,701.74
  4. Step 4: Simplify right side
    15,012.52x = 200,862,690.58
  5. Step 5: Solve for x
    x = 200,862,690.58/15,012.52
  6. Step 6: Final answer
    x = 13,379.68

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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.