Home / 20,868.20-31,302.64-5,875.68

Finding the Fourth Proportional to 20,868.20, 31,302.64 and 5,875.68

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Solution

The fourth proportional to 20,868.20, 31,302.64 and 5,875.68 is: 8,813.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.20 : 31,302.64 = 5,875.68 : x
  2. Step 2: Convert to fraction form
    20,868.20/31,302.64 = 5,875.68/x
  3. Step 3: Cross multiply
    20,868.20x = 31,302.64 × 5,875.68
  4. Step 4: Simplify right side
    20,868.20x = 183,924,194.68
  5. Step 5: Solve for x
    x = 183,924,194.68/20,868.20
  6. Step 6: Final answer
    x = 8,813.61

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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.