Home / 10,131.03-13,981.52-5,655.66

Finding the Fourth Proportional to 10,131.03, 13,981.52 and 5,655.66

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Solution

The fourth proportional to 10,131.03, 13,981.52 and 5,655.66 is: 7,805.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,131.03 : 13,981.52 = 5,655.66 : x
  2. Step 2: Convert to fraction form
    10,131.03/13,981.52 = 5,655.66/x
  3. Step 3: Cross multiply
    10,131.03x = 13,981.52 × 5,655.66
  4. Step 4: Simplify right side
    10,131.03x = 79,074,723.40
  5. Step 5: Solve for x
    x = 79,074,723.40/10,131.03
  6. Step 6: Final answer
    x = 7,805.20

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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.