Home / 55,991.47-83,986.18-13,871.65

Finding the Fourth Proportional to 55,991.47, 83,986.18 and 13,871.65

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Solution

The fourth proportional to 55,991.47, 83,986.18 and 13,871.65 is: 20,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,991.47 : 83,986.18 = 13,871.65 : x
  2. Step 2: Convert to fraction form
    55,991.47/83,986.18 = 13,871.65/x
  3. Step 3: Cross multiply
    55,991.47x = 83,986.18 × 13,871.65
  4. Step 4: Simplify right side
    55,991.47x = 1,165,026,545.23
  5. Step 5: Solve for x
    x = 1,165,026,545.23/55,991.47
  6. Step 6: Final answer
    x = 20,807.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.