Home / 18,923.40-28,391.18-5,777.10

Finding the Fourth Proportional to 18,923.40, 28,391.18 and 5,777.10

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Solution

The fourth proportional to 18,923.40, 28,391.18 and 5,777.10 is: 8,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.40 : 28,391.18 = 5,777.10 : x
  2. Step 2: Convert to fraction form
    18,923.40/28,391.18 = 5,777.10/x
  3. Step 3: Cross multiply
    18,923.40x = 28,391.18 × 5,777.10
  4. Step 4: Simplify right side
    18,923.40x = 164,018,685.98
  5. Step 5: Solve for x
    x = 164,018,685.98/18,923.40
  6. Step 6: Final answer
    x = 8,667.51

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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.