Home / 13,397.98-18,490.20-7,429.60

Finding the Fourth Proportional to 13,397.98, 18,490.20 and 7,429.60

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Solution

The fourth proportional to 13,397.98, 18,490.20 and 7,429.60 is: 10,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.98 : 18,490.20 = 7,429.60 : x
  2. Step 2: Convert to fraction form
    13,397.98/18,490.20 = 7,429.60/x
  3. Step 3: Cross multiply
    13,397.98x = 18,490.20 × 7,429.60
  4. Step 4: Simplify right side
    13,397.98x = 137,374,789.92
  5. Step 5: Solve for x
    x = 137,374,789.92/13,397.98
  6. Step 6: Final answer
    x = 10,253.40

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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.