Home / 28,264.54-39,003.24-15,689.20

Finding the Fourth Proportional to 28,264.54, 39,003.24 and 15,689.20

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Solution

The fourth proportional to 28,264.54, 39,003.24 and 15,689.20 is: 21,650.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.54 : 39,003.24 = 15,689.20 : x
  2. Step 2: Convert to fraction form
    28,264.54/39,003.24 = 15,689.20/x
  3. Step 3: Cross multiply
    28,264.54x = 39,003.24 × 15,689.20
  4. Step 4: Simplify right side
    28,264.54x = 611,929,633.01
  5. Step 5: Solve for x
    x = 611,929,633.01/28,264.54
  6. Step 6: Final answer
    x = 21,650.08

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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.