Home / 30,345.57-45,487.17-11,620.53

Finding the Fourth Proportional to 30,345.57, 45,487.17 and 11,620.53

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Solution

The fourth proportional to 30,345.57, 45,487.17 and 11,620.53 is: 17,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.57 : 45,487.17 = 11,620.53 : x
  2. Step 2: Convert to fraction form
    30,345.57/45,487.17 = 11,620.53/x
  3. Step 3: Cross multiply
    30,345.57x = 45,487.17 × 11,620.53
  4. Step 4: Simplify right side
    30,345.57x = 528,585,023.60
  5. Step 5: Solve for x
    x = 528,585,023.60/30,345.57
  6. Step 6: Final answer
    x = 17,418.85

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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.