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Finding the Fourth Proportional to 15,772.60, 23,658.90 and 13,427.20

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Solution

The fourth proportional to 15,772.60, 23,658.90 and 13,427.20 is: 20,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.60 : 23,658.90 = 13,427.20 : x
  2. Step 2: Convert to fraction form
    15,772.60/23,658.90 = 13,427.20/x
  3. Step 3: Cross multiply
    15,772.60x = 23,658.90 × 13,427.20
  4. Step 4: Simplify right side
    15,772.60x = 317,672,782.08
  5. Step 5: Solve for x
    x = 317,672,782.08/15,772.60
  6. Step 6: Final answer
    x = 20,140.80

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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.