Home / 15,551.60-23,327.40-12,781.40

Finding the Fourth Proportional to 15,551.60, 23,327.40 and 12,781.40

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Solution

The fourth proportional to 15,551.60, 23,327.40 and 12,781.40 is: 19,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.60 : 23,327.40 = 12,781.40 : x
  2. Step 2: Convert to fraction form
    15,551.60/23,327.40 = 12,781.40/x
  3. Step 3: Cross multiply
    15,551.60x = 23,327.40 × 12,781.40
  4. Step 4: Simplify right side
    15,551.60x = 298,156,830.36
  5. Step 5: Solve for x
    x = 298,156,830.36/15,551.60
  6. Step 6: Final answer
    x = 19,172.10

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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.