Home / 20,373.76-28,114.80-11,422.24

Finding the Fourth Proportional to 20,373.76, 28,114.80 and 11,422.24

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Solution

The fourth proportional to 20,373.76, 28,114.80 and 11,422.24 is: 15,762.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.76 : 28,114.80 = 11,422.24 : x
  2. Step 2: Convert to fraction form
    20,373.76/28,114.80 = 11,422.24/x
  3. Step 3: Cross multiply
    20,373.76x = 28,114.80 × 11,422.24
  4. Step 4: Simplify right side
    20,373.76x = 321,133,993.15
  5. Step 5: Solve for x
    x = 321,133,993.15/20,373.76
  6. Step 6: Final answer
    x = 15,762.14

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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.