Home / 30,139.90-45,216.96-10,418.62

Finding the Fourth Proportional to 30,139.90, 45,216.96 and 10,418.62

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Solution

The fourth proportional to 30,139.90, 45,216.96 and 10,418.62 is: 15,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.90 : 45,216.96 = 10,418.62 : x
  2. Step 2: Convert to fraction form
    30,139.90/45,216.96 = 10,418.62/x
  3. Step 3: Cross multiply
    30,139.90x = 45,216.96 × 10,418.62
  4. Step 4: Simplify right side
    30,139.90x = 471,098,323.80
  5. Step 5: Solve for x
    x = 471,098,323.80/30,139.90
  6. Step 6: Final answer
    x = 15,630.39

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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.