Home / 15,048.35-20,770.18-10,012.78

Finding the Fourth Proportional to 15,048.35, 20,770.18 and 10,012.78

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Solution

The fourth proportional to 15,048.35, 20,770.18 and 10,012.78 is: 13,819.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.35 : 20,770.18 = 10,012.78 : x
  2. Step 2: Convert to fraction form
    15,048.35/20,770.18 = 10,012.78/x
  3. Step 3: Cross multiply
    15,048.35x = 20,770.18 × 10,012.78
  4. Step 4: Simplify right side
    15,048.35x = 207,967,269.79
  5. Step 5: Solve for x
    x = 207,967,269.79/15,048.35
  6. Step 6: Final answer
    x = 13,819.94

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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.