Home / 28,886.76-39,863.27-16,140.20

Finding the Fourth Proportional to 28,886.76, 39,863.27 and 16,140.20

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Solution

The fourth proportional to 28,886.76, 39,863.27 and 16,140.20 is: 22,273.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.76 : 39,863.27 = 16,140.20 : x
  2. Step 2: Convert to fraction form
    28,886.76/39,863.27 = 16,140.20/x
  3. Step 3: Cross multiply
    28,886.76x = 39,863.27 × 16,140.20
  4. Step 4: Simplify right side
    28,886.76x = 643,400,991.49
  5. Step 5: Solve for x
    x = 643,400,991.49/28,886.76
  6. Step 6: Final answer
    x = 22,273.21

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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.