Home / 13,756.17-18,995.15-8,729.31

Finding the Fourth Proportional to 13,756.17, 18,995.15 and 8,729.31

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Solution

The fourth proportional to 13,756.17, 18,995.15 and 8,729.31 is: 12,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.17 : 18,995.15 = 8,729.31 : x
  2. Step 2: Convert to fraction form
    13,756.17/18,995.15 = 8,729.31/x
  3. Step 3: Cross multiply
    13,756.17x = 18,995.15 × 8,729.31
  4. Step 4: Simplify right side
    13,756.17x = 165,814,509.20
  5. Step 5: Solve for x
    x = 165,814,509.20/13,756.17
  6. Step 6: Final answer
    x = 12,053.83

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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.