Home / 22,911.59-31,619.95-12,839.90

Finding the Fourth Proportional to 22,911.59, 31,619.95 and 12,839.90

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Solution

The fourth proportional to 22,911.59, 31,619.95 and 12,839.90 is: 17,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,911.59 : 31,619.95 = 12,839.90 : x
  2. Step 2: Convert to fraction form
    22,911.59/31,619.95 = 12,839.90/x
  3. Step 3: Cross multiply
    22,911.59x = 31,619.95 × 12,839.90
  4. Step 4: Simplify right side
    22,911.59x = 405,996,805.81
  5. Step 5: Solve for x
    x = 405,996,805.81/22,911.59
  6. Step 6: Final answer
    x = 17,720.15

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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.