Home / 28,418.02-39,217.16-15,671.66

Finding the Fourth Proportional to 28,418.02, 39,217.16 and 15,671.66

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Solution

The fourth proportional to 28,418.02, 39,217.16 and 15,671.66 is: 21,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.02 : 39,217.16 = 15,671.66 : x
  2. Step 2: Convert to fraction form
    28,418.02/39,217.16 = 15,671.66/x
  3. Step 3: Cross multiply
    28,418.02x = 39,217.16 × 15,671.66
  4. Step 4: Simplify right side
    28,418.02x = 614,597,840.78
  5. Step 5: Solve for x
    x = 614,597,840.78/28,418.02
  6. Step 6: Final answer
    x = 21,627.05

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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.