Home / 20,887.98-31,332.12-6,107.20

Finding the Fourth Proportional to 20,887.98, 31,332.12 and 6,107.20

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Solution

The fourth proportional to 20,887.98, 31,332.12 and 6,107.20 is: 9,160.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.98 : 31,332.12 = 6,107.20 : x
  2. Step 2: Convert to fraction form
    20,887.98/31,332.12 = 6,107.20/x
  3. Step 3: Cross multiply
    20,887.98x = 31,332.12 × 6,107.20
  4. Step 4: Simplify right side
    20,887.98x = 191,351,422.03
  5. Step 5: Solve for x
    x = 191,351,422.03/20,887.98
  6. Step 6: Final answer
    x = 9,160.84

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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.