Home / 12,615.30-18,890.55-10,001.70

Finding the Fourth Proportional to 12,615.30, 18,890.55 and 10,001.70

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Solution

The fourth proportional to 12,615.30, 18,890.55 and 10,001.70 is: 14,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.30 : 18,890.55 = 10,001.70 : x
  2. Step 2: Convert to fraction form
    12,615.30/18,890.55 = 10,001.70/x
  3. Step 3: Cross multiply
    12,615.30x = 18,890.55 × 10,001.70
  4. Step 4: Simplify right side
    12,615.30x = 188,937,613.94
  5. Step 5: Solve for x
    x = 188,937,613.94/12,615.30
  6. Step 6: Final answer
    x = 14,976.86

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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.