Home / 18,928.28-28,395.16-5,778.95

Finding the Fourth Proportional to 18,928.28, 28,395.16 and 5,778.95

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Solution

The fourth proportional to 18,928.28, 28,395.16 and 5,778.95 is: 8,669.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.28 : 28,395.16 = 5,778.95 : x
  2. Step 2: Convert to fraction form
    18,928.28/28,395.16 = 5,778.95/x
  3. Step 3: Cross multiply
    18,928.28x = 28,395.16 × 5,778.95
  4. Step 4: Simplify right side
    18,928.28x = 164,094,053.46
  5. Step 5: Solve for x
    x = 164,094,053.46/18,928.28
  6. Step 6: Final answer
    x = 8,669.25

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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.