Home / 15,112.56-20,854.98-8,397.84

Finding the Fourth Proportional to 15,112.56, 20,854.98 and 8,397.84

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Solution

The fourth proportional to 15,112.56, 20,854.98 and 8,397.84 is: 11,588.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.56 : 20,854.98 = 8,397.84 : x
  2. Step 2: Convert to fraction form
    15,112.56/20,854.98 = 8,397.84/x
  3. Step 3: Cross multiply
    15,112.56x = 20,854.98 × 8,397.84
  4. Step 4: Simplify right side
    15,112.56x = 175,136,785.24
  5. Step 5: Solve for x
    x = 175,136,785.24/15,112.56
  6. Step 6: Final answer
    x = 11,588.82

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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.