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Finding the Fourth Proportional to 21,374.88, 32,068.80 and 10,278.42

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Solution

The fourth proportional to 21,374.88, 32,068.80 and 10,278.42 is: 15,420.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.88 : 32,068.80 = 10,278.42 : x
  2. Step 2: Convert to fraction form
    21,374.88/32,068.80 = 10,278.42/x
  3. Step 3: Cross multiply
    21,374.88x = 32,068.80 × 10,278.42
  4. Step 4: Simplify right side
    21,374.88x = 329,616,595.30
  5. Step 5: Solve for x
    x = 329,616,595.30/21,374.88
  6. Step 6: Final answer
    x = 15,420.75

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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.