Home / 10,043.12-15,064.80-4,778.70

Finding the Fourth Proportional to 10,043.12, 15,064.80 and 4,778.70

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Solution

The fourth proportional to 10,043.12, 15,064.80 and 4,778.70 is: 7,168.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,043.12 : 15,064.80 = 4,778.70 : x
  2. Step 2: Convert to fraction form
    10,043.12/15,064.80 = 4,778.70/x
  3. Step 3: Cross multiply
    10,043.12x = 15,064.80 × 4,778.70
  4. Step 4: Simplify right side
    10,043.12x = 71,990,159.76
  5. Step 5: Solve for x
    x = 71,990,159.76/10,043.12
  6. Step 6: Final answer
    x = 7,168.11

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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.