Home / 15,131.36-20,877.88-9,162.91

Finding the Fourth Proportional to 15,131.36, 20,877.88 and 9,162.91

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Solution

The fourth proportional to 15,131.36, 20,877.88 and 9,162.91 is: 12,642.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.36 : 20,877.88 = 9,162.91 : x
  2. Step 2: Convert to fraction form
    15,131.36/20,877.88 = 9,162.91/x
  3. Step 3: Cross multiply
    15,131.36x = 20,877.88 × 9,162.91
  4. Step 4: Simplify right side
    15,131.36x = 191,302,135.43
  5. Step 5: Solve for x
    x = 191,302,135.43/15,131.36
  6. Step 6: Final answer
    x = 12,642.76

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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.