Home / 22,618.64-31,213.75-13,189.03

Finding the Fourth Proportional to 22,618.64, 31,213.75 and 13,189.03

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Solution

The fourth proportional to 22,618.64, 31,213.75 and 13,189.03 is: 18,200.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,618.64 : 31,213.75 = 13,189.03 : x
  2. Step 2: Convert to fraction form
    22,618.64/31,213.75 = 13,189.03/x
  3. Step 3: Cross multiply
    22,618.64x = 31,213.75 × 13,189.03
  4. Step 4: Simplify right side
    22,618.64x = 411,679,085.16
  5. Step 5: Solve for x
    x = 411,679,085.16/22,618.64
  6. Step 6: Final answer
    x = 18,200.88

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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.