Home / 13,002.60-19,503.90-8,087.40

Finding the Fourth Proportional to 13,002.60, 19,503.90 and 8,087.40

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Solution

The fourth proportional to 13,002.60, 19,503.90 and 8,087.40 is: 12,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,002.60 : 19,503.90 = 8,087.40 : x
  2. Step 2: Convert to fraction form
    13,002.60/19,503.90 = 8,087.40/x
  3. Step 3: Cross multiply
    13,002.60x = 19,503.90 × 8,087.40
  4. Step 4: Simplify right side
    13,002.60x = 157,735,840.86
  5. Step 5: Solve for x
    x = 157,735,840.86/13,002.60
  6. Step 6: Final answer
    x = 12,131.10

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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.