Home / 13,724.50-18,939.90-7,436.92

Finding the Fourth Proportional to 13,724.50, 18,939.90 and 7,436.92

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Solution

The fourth proportional to 13,724.50, 18,939.90 and 7,436.92 is: 10,263.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.50 : 18,939.90 = 7,436.92 : x
  2. Step 2: Convert to fraction form
    13,724.50/18,939.90 = 7,436.92/x
  3. Step 3: Cross multiply
    13,724.50x = 18,939.90 × 7,436.92
  4. Step 4: Simplify right side
    13,724.50x = 140,854,521.11
  5. Step 5: Solve for x
    x = 140,854,521.11/13,724.50
  6. Step 6: Final answer
    x = 10,263.00

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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.