Home / 22,619.89-31,207.98-13,663.99

Finding the Fourth Proportional to 22,619.89, 31,207.98 and 13,663.99

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Solution

The fourth proportional to 22,619.89, 31,207.98 and 13,663.99 is: 18,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,619.89 : 31,207.98 = 13,663.99 : x
  2. Step 2: Convert to fraction form
    22,619.89/31,207.98 = 13,663.99/x
  3. Step 3: Cross multiply
    22,619.89x = 31,207.98 × 13,663.99
  4. Step 4: Simplify right side
    22,619.89x = 426,425,526.64
  5. Step 5: Solve for x
    x = 426,425,526.64/22,619.89
  6. Step 6: Final answer
    x = 18,851.79

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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.