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Finding the Fourth Proportional to 52,981.86, 79,472.58 and 13,538.91

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Solution

The fourth proportional to 52,981.86, 79,472.58 and 13,538.91 is: 20,308.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,981.86 : 79,472.58 = 13,538.91 : x
  2. Step 2: Convert to fraction form
    52,981.86/79,472.58 = 13,538.91/x
  3. Step 3: Cross multiply
    52,981.86x = 79,472.58 × 13,538.91
  4. Step 4: Simplify right side
    52,981.86x = 1,075,972,108.09
  5. Step 5: Solve for x
    x = 1,075,972,108.09/52,981.86
  6. Step 6: Final answer
    x = 20,308.31

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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.