Home / 27,928.71-38,574.50-18,480.87

Finding the Fourth Proportional to 27,928.71, 38,574.50 and 18,480.87

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Solution

The fourth proportional to 27,928.71, 38,574.50 and 18,480.87 is: 25,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,928.71 : 38,574.50 = 18,480.87 : x
  2. Step 2: Convert to fraction form
    27,928.71/38,574.50 = 18,480.87/x
  3. Step 3: Cross multiply
    27,928.71x = 38,574.50 × 18,480.87
  4. Step 4: Simplify right side
    27,928.71x = 712,890,227.41
  5. Step 5: Solve for x
    x = 712,890,227.41/27,928.71
  6. Step 6: Final answer
    x = 25,525.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.