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Finding the Fourth Proportional to 14,651.52, 20,219.36 and 7,937.28

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Solution

The fourth proportional to 14,651.52, 20,219.36 and 7,937.28 is: 10,953.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.52 : 20,219.36 = 7,937.28 : x
  2. Step 2: Convert to fraction form
    14,651.52/20,219.36 = 7,937.28/x
  3. Step 3: Cross multiply
    14,651.52x = 20,219.36 × 7,937.28
  4. Step 4: Simplify right side
    14,651.52x = 160,486,721.74
  5. Step 5: Solve for x
    x = 160,486,721.74/14,651.52
  6. Step 6: Final answer
    x = 10,953.59

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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.