Home / 28,560.02-39,414.06-15,813.20

Finding the Fourth Proportional to 28,560.02, 39,414.06 and 15,813.20

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Solution

The fourth proportional to 28,560.02, 39,414.06 and 15,813.20 is: 21,822.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.02 : 39,414.06 = 15,813.20 : x
  2. Step 2: Convert to fraction form
    28,560.02/39,414.06 = 15,813.20/x
  3. Step 3: Cross multiply
    28,560.02x = 39,414.06 × 15,813.20
  4. Step 4: Simplify right side
    28,560.02x = 623,262,446.95
  5. Step 5: Solve for x
    x = 623,262,446.95/28,560.02
  6. Step 6: Final answer
    x = 21,822.90

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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.