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Finding the Fourth Proportional to 15,327.10, 21,487.10 and 15,327.10

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Solution

The fourth proportional to 15,327.10, 21,487.10 and 15,327.10 is: 21,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.10 : 21,487.10 = 15,327.10 : x
  2. Step 2: Convert to fraction form
    15,327.10/21,487.10 = 15,327.10/x
  3. Step 3: Cross multiply
    15,327.10x = 21,487.10 × 15,327.10
  4. Step 4: Simplify right side
    15,327.10x = 329,334,930.41
  5. Step 5: Solve for x
    x = 329,334,930.41/15,327.10
  6. Step 6: Final answer
    x = 21,487.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.