Home / 13,610.16-18,781.80-7,641.84

Finding the Fourth Proportional to 13,610.16, 18,781.80 and 7,641.84

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Solution

The fourth proportional to 13,610.16, 18,781.80 and 7,641.84 is: 10,545.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.16 : 18,781.80 = 7,641.84 : x
  2. Step 2: Convert to fraction form
    13,610.16/18,781.80 = 7,641.84/x
  3. Step 3: Cross multiply
    13,610.16x = 18,781.80 × 7,641.84
  4. Step 4: Simplify right side
    13,610.16x = 143,527,510.51
  5. Step 5: Solve for x
    x = 143,527,510.51/13,610.16
  6. Step 6: Final answer
    x = 10,545.62

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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.