Home / 15,876.96-23,820.57-13,131.78

Finding the Fourth Proportional to 15,876.96, 23,820.57 and 13,131.78

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Solution

The fourth proportional to 15,876.96, 23,820.57 and 13,131.78 is: 19,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.96 : 23,820.57 = 13,131.78 : x
  2. Step 2: Convert to fraction form
    15,876.96/23,820.57 = 13,131.78/x
  3. Step 3: Cross multiply
    15,876.96x = 23,820.57 × 13,131.78
  4. Step 4: Simplify right side
    15,876.96x = 312,806,484.71
  5. Step 5: Solve for x
    x = 312,806,484.71/15,876.96
  6. Step 6: Final answer
    x = 19,701.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.