Home / 22,569.04-31,148.52-13,142.80

Finding the Fourth Proportional to 22,569.04, 31,148.52 and 13,142.80

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Solution

The fourth proportional to 22,569.04, 31,148.52 and 13,142.80 is: 18,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,569.04 : 31,148.52 = 13,142.80 : x
  2. Step 2: Convert to fraction form
    22,569.04/31,148.52 = 13,142.80/x
  3. Step 3: Cross multiply
    22,569.04x = 31,148.52 × 13,142.80
  4. Step 4: Simplify right side
    22,569.04x = 409,378,768.66
  5. Step 5: Solve for x
    x = 409,378,768.66/22,569.04
  6. Step 6: Final answer
    x = 18,138.95

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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.