Home / 10,279.70-15,419.55-8,870.30

Finding the Fourth Proportional to 10,279.70, 15,419.55 and 8,870.30

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Solution

The fourth proportional to 10,279.70, 15,419.55 and 8,870.30 is: 13,305.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.70 : 15,419.55 = 8,870.30 : x
  2. Step 2: Convert to fraction form
    10,279.70/15,419.55 = 8,870.30/x
  3. Step 3: Cross multiply
    10,279.70x = 15,419.55 × 8,870.30
  4. Step 4: Simplify right side
    10,279.70x = 136,776,034.37
  5. Step 5: Solve for x
    x = 136,776,034.37/10,279.70
  6. Step 6: Final answer
    x = 13,305.45

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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.