Home / 13,747.20-18,971.22-7,459.60

Finding the Fourth Proportional to 13,747.20, 18,971.22 and 7,459.60

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Solution

The fourth proportional to 13,747.20, 18,971.22 and 7,459.60 is: 10,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.20 : 18,971.22 = 7,459.60 : x
  2. Step 2: Convert to fraction form
    13,747.20/18,971.22 = 7,459.60/x
  3. Step 3: Cross multiply
    13,747.20x = 18,971.22 × 7,459.60
  4. Step 4: Simplify right side
    13,747.20x = 141,517,712.71
  5. Step 5: Solve for x
    x = 141,517,712.71/13,747.20
  6. Step 6: Final answer
    x = 10,294.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.