Home / 38,790.66-58,169.59-12,129.50

Finding the Fourth Proportional to 38,790.66, 58,169.59 and 12,129.50

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Solution

The fourth proportional to 38,790.66, 58,169.59 and 12,129.50 is: 18,189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,790.66 : 58,169.59 = 12,129.50 : x
  2. Step 2: Convert to fraction form
    38,790.66/58,169.59 = 12,129.50/x
  3. Step 3: Cross multiply
    38,790.66x = 58,169.59 × 12,129.50
  4. Step 4: Simplify right side
    38,790.66x = 705,567,898.03
  5. Step 5: Solve for x
    x = 705,567,898.03/38,790.66
  6. Step 6: Final answer
    x = 18,189.12

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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.