Home / 13,988.32-20,976.20-4,124.14

Finding the Fourth Proportional to 13,988.32, 20,976.20 and 4,124.14

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Solution

The fourth proportional to 13,988.32, 20,976.20 and 4,124.14 is: 6,184.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.32 : 20,976.20 = 4,124.14 : x
  2. Step 2: Convert to fraction form
    13,988.32/20,976.20 = 4,124.14/x
  3. Step 3: Cross multiply
    13,988.32x = 20,976.20 × 4,124.14
  4. Step 4: Simplify right side
    13,988.32x = 86,508,785.47
  5. Step 5: Solve for x
    x = 86,508,785.47/13,988.32
  6. Step 6: Final answer
    x = 6,184.36

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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.