Home / 22,615.67-31,210.85-13,663.08

Finding the Fourth Proportional to 22,615.67, 31,210.85 and 13,663.08

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Solution

The fourth proportional to 22,615.67, 31,210.85 and 13,663.08 is: 18,855.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.67 : 31,210.85 = 13,663.08 : x
  2. Step 2: Convert to fraction form
    22,615.67/31,210.85 = 13,663.08/x
  3. Step 3: Cross multiply
    22,615.67x = 31,210.85 × 13,663.08
  4. Step 4: Simplify right side
    22,615.67x = 426,436,374.58
  5. Step 5: Solve for x
    x = 426,436,374.58/22,615.67
  6. Step 6: Final answer
    x = 18,855.79

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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.