Home / 10,518.24-15,777.18-3,127.70

Finding the Fourth Proportional to 10,518.24, 15,777.18 and 3,127.70

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Solution

The fourth proportional to 10,518.24, 15,777.18 and 3,127.70 is: 4,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.24 : 15,777.18 = 3,127.70 : x
  2. Step 2: Convert to fraction form
    10,518.24/15,777.18 = 3,127.70/x
  3. Step 3: Cross multiply
    10,518.24x = 15,777.18 × 3,127.70
  4. Step 4: Simplify right side
    10,518.24x = 49,346,285.89
  5. Step 5: Solve for x
    x = 49,346,285.89/10,518.24
  6. Step 6: Final answer
    x = 4,691.50

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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.