Home / 22,615.96-31,211.60-12,545.36

Finding the Fourth Proportional to 22,615.96, 31,211.60 and 12,545.36

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Solution

The fourth proportional to 22,615.96, 31,211.60 and 12,545.36 is: 17,313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.96 : 31,211.60 = 12,545.36 : x
  2. Step 2: Convert to fraction form
    22,615.96/31,211.60 = 12,545.36/x
  3. Step 3: Cross multiply
    22,615.96x = 31,211.60 × 12,545.36
  4. Step 4: Simplify right side
    22,615.96x = 391,560,758.18
  5. Step 5: Solve for x
    x = 391,560,758.18/22,615.96
  6. Step 6: Final answer
    x = 17,313.47

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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.