Home / 22,570.04-31,149.90-13,143.80

Finding the Fourth Proportional to 22,570.04, 31,149.90 and 13,143.80

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Solution

The fourth proportional to 22,570.04, 31,149.90 and 13,143.80 is: 18,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,570.04 : 31,149.90 = 13,143.80 : x
  2. Step 2: Convert to fraction form
    22,570.04/31,149.90 = 13,143.80/x
  3. Step 3: Cross multiply
    22,570.04x = 31,149.90 × 13,143.80
  4. Step 4: Simplify right side
    22,570.04x = 409,428,055.62
  5. Step 5: Solve for x
    x = 409,428,055.62/22,570.04
  6. Step 6: Final answer
    x = 18,140.33

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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.