Home / 19,020.30-28,538.55-12,005.70

Finding the Fourth Proportional to 19,020.30, 28,538.55 and 12,005.70

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Solution

The fourth proportional to 19,020.30, 28,538.55 and 12,005.70 is: 18,013.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.30 : 28,538.55 = 12,005.70 : x
  2. Step 2: Convert to fraction form
    19,020.30/28,538.55 = 12,005.70/x
  3. Step 3: Cross multiply
    19,020.30x = 28,538.55 × 12,005.70
  4. Step 4: Simplify right side
    19,020.30x = 342,625,269.74
  5. Step 5: Solve for x
    x = 342,625,269.74/19,020.30
  6. Step 6: Final answer
    x = 18,013.66

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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.