Home / 30,108.78-45,162.77-9,332.28

Finding the Fourth Proportional to 30,108.78, 45,162.77 and 9,332.28

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Solution

The fourth proportional to 30,108.78, 45,162.77 and 9,332.28 is: 13,998.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.78 : 45,162.77 = 9,332.28 : x
  2. Step 2: Convert to fraction form
    30,108.78/45,162.77 = 9,332.28/x
  3. Step 3: Cross multiply
    30,108.78x = 45,162.77 × 9,332.28
  4. Step 4: Simplify right side
    30,108.78x = 421,471,568.55
  5. Step 5: Solve for x
    x = 421,471,568.55/30,108.78
  6. Step 6: Final answer
    x = 13,998.29

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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.