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Finding the Fourth Proportional to 29,307.68, 40,381.52 and 19,859.68

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Solution

The fourth proportional to 29,307.68, 40,381.52 and 19,859.68 is: 27,363.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,307.68 : 40,381.52 = 19,859.68 : x
  2. Step 2: Convert to fraction form
    29,307.68/40,381.52 = 19,859.68/x
  3. Step 3: Cross multiply
    29,307.68x = 40,381.52 × 19,859.68
  4. Step 4: Simplify right side
    29,307.68x = 801,964,065.11
  5. Step 5: Solve for x
    x = 801,964,065.11/29,307.68
  6. Step 6: Final answer
    x = 27,363.61

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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.