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Finding the Fourth Proportional to 19,953.88, 29,937.68 and 8,868.32

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Solution

The fourth proportional to 19,953.88, 29,937.68 and 8,868.32 is: 13,305.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.88 : 29,937.68 = 8,868.32 : x
  2. Step 2: Convert to fraction form
    19,953.88/29,937.68 = 8,868.32/x
  3. Step 3: Cross multiply
    19,953.88x = 29,937.68 × 8,868.32
  4. Step 4: Simplify right side
    19,953.88x = 265,496,926.30
  5. Step 5: Solve for x
    x = 265,496,926.30/19,953.88
  6. Step 6: Final answer
    x = 13,305.53

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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.