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Finding the Fourth Proportional to 38,246.84, 52,780.16 and 21,479.84

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Solution

The fourth proportional to 38,246.84, 52,780.16 and 21,479.84 is: 29,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,246.84 : 52,780.16 = 21,479.84 : x
  2. Step 2: Convert to fraction form
    38,246.84/52,780.16 = 21,479.84/x
  3. Step 3: Cross multiply
    38,246.84x = 52,780.16 × 21,479.84
  4. Step 4: Simplify right side
    38,246.84x = 1,133,709,181.77
  5. Step 5: Solve for x
    x = 1,133,709,181.77/38,246.84
  6. Step 6: Final answer
    x = 29,641.91

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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.