Home / 22,551.68-31,130.04-20,189.72

Finding the Fourth Proportional to 22,551.68, 31,130.04 and 20,189.72

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Solution

The fourth proportional to 22,551.68, 31,130.04 and 20,189.72 is: 27,869.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.68 : 31,130.04 = 20,189.72 : x
  2. Step 2: Convert to fraction form
    22,551.68/31,130.04 = 20,189.72/x
  3. Step 3: Cross multiply
    22,551.68x = 31,130.04 × 20,189.72
  4. Step 4: Simplify right side
    22,551.68x = 628,506,791.19
  5. Step 5: Solve for x
    x = 628,506,791.19/22,551.68
  6. Step 6: Final answer
    x = 27,869.62

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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.