Home / 13,407.29-18,504.28-7,440.87

Finding the Fourth Proportional to 13,407.29, 18,504.28 and 7,440.87

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Solution

The fourth proportional to 13,407.29, 18,504.28 and 7,440.87 is: 10,269.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.29 : 18,504.28 = 7,440.87 : x
  2. Step 2: Convert to fraction form
    13,407.29/18,504.28 = 7,440.87/x
  3. Step 3: Cross multiply
    13,407.29x = 18,504.28 × 7,440.87
  4. Step 4: Simplify right side
    13,407.29x = 137,687,941.92
  5. Step 5: Solve for x
    x = 137,687,941.92/13,407.29
  6. Step 6: Final answer
    x = 10,269.63

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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.