Home / 28,095.45-38,772.02-15,520.20

Finding the Fourth Proportional to 28,095.45, 38,772.02 and 15,520.20

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Solution

The fourth proportional to 28,095.45, 38,772.02 and 15,520.20 is: 21,418.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.45 : 38,772.02 = 15,520.20 : x
  2. Step 2: Convert to fraction form
    28,095.45/38,772.02 = 15,520.20/x
  3. Step 3: Cross multiply
    28,095.45x = 38,772.02 × 15,520.20
  4. Step 4: Simplify right side
    28,095.45x = 601,749,504.80
  5. Step 5: Solve for x
    x = 601,749,504.80/28,095.45
  6. Step 6: Final answer
    x = 21,418.04

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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.