Home / 20,888.48-31,332.87-6,107.70

Finding the Fourth Proportional to 20,888.48, 31,332.87 and 6,107.70

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Solution

The fourth proportional to 20,888.48, 31,332.87 and 6,107.70 is: 9,161.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.48 : 31,332.87 = 6,107.70 : x
  2. Step 2: Convert to fraction form
    20,888.48/31,332.87 = 6,107.70/x
  3. Step 3: Cross multiply
    20,888.48x = 31,332.87 × 6,107.70
  4. Step 4: Simplify right side
    20,888.48x = 191,371,739.56
  5. Step 5: Solve for x
    x = 191,371,739.56/20,888.48
  6. Step 6: Final answer
    x = 9,161.59

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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.