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Finding the Fourth Proportional to 15,589.60, 23,384.40 and 12,819.40

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Solution

The fourth proportional to 15,589.60, 23,384.40 and 12,819.40 is: 19,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.60 : 23,384.40 = 12,819.40 : x
  2. Step 2: Convert to fraction form
    15,589.60/23,384.40 = 12,819.40/x
  3. Step 3: Cross multiply
    15,589.60x = 23,384.40 × 12,819.40
  4. Step 4: Simplify right side
    15,589.60x = 299,773,977.36
  5. Step 5: Solve for x
    x = 299,773,977.36/15,589.60
  6. Step 6: Final answer
    x = 19,229.10

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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.