Home / 20,521.04-30,777.10-5,527.78

Finding the Fourth Proportional to 20,521.04, 30,777.10 and 5,527.78

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Solution

The fourth proportional to 20,521.04, 30,777.10 and 5,527.78 is: 8,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.04 : 30,777.10 = 5,527.78 : x
  2. Step 2: Convert to fraction form
    20,521.04/30,777.10 = 5,527.78/x
  3. Step 3: Cross multiply
    20,521.04x = 30,777.10 × 5,527.78
  4. Step 4: Simplify right side
    20,521.04x = 170,129,037.84
  5. Step 5: Solve for x
    x = 170,129,037.84/20,521.04
  6. Step 6: Final answer
    x = 8,290.47

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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.