Home / 20,295.10-28,019.35-12,747.89

Finding the Fourth Proportional to 20,295.10, 28,019.35 and 12,747.89

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Solution

The fourth proportional to 20,295.10, 28,019.35 and 12,747.89 is: 17,599.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.10 : 28,019.35 = 12,747.89 : x
  2. Step 2: Convert to fraction form
    20,295.10/28,019.35 = 12,747.89/x
  3. Step 3: Cross multiply
    20,295.10x = 28,019.35 × 12,747.89
  4. Step 4: Simplify right side
    20,295.10x = 357,187,677.65
  5. Step 5: Solve for x
    x = 357,187,677.65/20,295.10
  6. Step 6: Final answer
    x = 17,599.70

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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.