Home / 13,117.92-18,100.65-7,374.24

Finding the Fourth Proportional to 13,117.92, 18,100.65 and 7,374.24

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Solution

The fourth proportional to 13,117.92, 18,100.65 and 7,374.24 is: 10,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.92 : 18,100.65 = 7,374.24 : x
  2. Step 2: Convert to fraction form
    13,117.92/18,100.65 = 7,374.24/x
  3. Step 3: Cross multiply
    13,117.92x = 18,100.65 × 7,374.24
  4. Step 4: Simplify right side
    13,117.92x = 133,478,446.75
  5. Step 5: Solve for x
    x = 133,478,446.75/13,117.92
  6. Step 6: Final answer
    x = 10,175.28

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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.