Home / 30,331.08-41,834.60-20,103.61

Finding the Fourth Proportional to 30,331.08, 41,834.60 and 20,103.61

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Solution

The fourth proportional to 30,331.08, 41,834.60 and 20,103.61 is: 27,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331.08 : 41,834.60 = 20,103.61 : x
  2. Step 2: Convert to fraction form
    30,331.08/41,834.60 = 20,103.61/x
  3. Step 3: Cross multiply
    30,331.08x = 41,834.60 × 20,103.61
  4. Step 4: Simplify right side
    30,331.08x = 841,026,482.91
  5. Step 5: Solve for x
    x = 841,026,482.91/30,331.08
  6. Step 6: Final answer
    x = 27,728.21

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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.