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Finding the Fourth Proportional to 38,999.80, 58,499.22 and 9,417.40

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Solution

The fourth proportional to 38,999.80, 58,499.22 and 9,417.40 is: 14,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,999.80 : 58,499.22 = 9,417.40 : x
  2. Step 2: Convert to fraction form
    38,999.80/58,499.22 = 9,417.40/x
  3. Step 3: Cross multiply
    38,999.80x = 58,499.22 × 9,417.40
  4. Step 4: Simplify right side
    38,999.80x = 550,910,554.43
  5. Step 5: Solve for x
    x = 550,910,554.43/38,999.80
  6. Step 6: Final answer
    x = 14,125.98

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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.