Home / 13,489.06-18,614.70-7,521.10

Finding the Fourth Proportional to 13,489.06, 18,614.70 and 7,521.10

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Solution

The fourth proportional to 13,489.06, 18,614.70 and 7,521.10 is: 10,379.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.06 : 18,614.70 = 7,521.10 : x
  2. Step 2: Convert to fraction form
    13,489.06/18,614.70 = 7,521.10/x
  3. Step 3: Cross multiply
    13,489.06x = 18,614.70 × 7,521.10
  4. Step 4: Simplify right side
    13,489.06x = 140,003,020.17
  5. Step 5: Solve for x
    x = 140,003,020.17/13,489.06
  6. Step 6: Final answer
    x = 10,379.00

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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.