Home / 42,806.88-64,223.04-20,613.84

Finding the Fourth Proportional to 42,806.88, 64,223.04 and 20,613.84

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Solution

The fourth proportional to 42,806.88, 64,223.04 and 20,613.84 is: 30,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,806.88 : 64,223.04 = 20,613.84 : x
  2. Step 2: Convert to fraction form
    42,806.88/64,223.04 = 20,613.84/x
  3. Step 3: Cross multiply
    42,806.88x = 64,223.04 × 20,613.84
  4. Step 4: Simplify right side
    42,806.88x = 1,323,883,470.87
  5. Step 5: Solve for x
    x = 1,323,883,470.87/42,806.88
  6. Step 6: Final answer
    x = 30,926.89

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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.