Home / 30,559.75-42,159.09-21,614.92

Finding the Fourth Proportional to 30,559.75, 42,159.09 and 21,614.92

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Solution

The fourth proportional to 30,559.75, 42,159.09 and 21,614.92 is: 29,819.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,559.75 : 42,159.09 = 21,614.92 : x
  2. Step 2: Convert to fraction form
    30,559.75/42,159.09 = 21,614.92/x
  3. Step 3: Cross multiply
    30,559.75x = 42,159.09 × 21,614.92
  4. Step 4: Simplify right side
    30,559.75x = 911,265,357.62
  5. Step 5: Solve for x
    x = 911,265,357.62/30,559.75
  6. Step 6: Final answer
    x = 29,819.14

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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.