Home / 22,703.20-31,329.78-12,631.12

Finding the Fourth Proportional to 22,703.20, 31,329.78 and 12,631.12

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Solution

The fourth proportional to 22,703.20, 31,329.78 and 12,631.12 is: 17,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,703.20 : 31,329.78 = 12,631.12 : x
  2. Step 2: Convert to fraction form
    22,703.20/31,329.78 = 12,631.12/x
  3. Step 3: Cross multiply
    22,703.20x = 31,329.78 × 12,631.12
  4. Step 4: Simplify right side
    22,703.20x = 395,730,210.75
  5. Step 5: Solve for x
    x = 395,730,210.75/22,703.20
  6. Step 6: Final answer
    x = 17,430.59

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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.