Home / 15,942.22-21,985.02-12,158.68

Finding the Fourth Proportional to 15,942.22, 21,985.02 and 12,158.68

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Solution

The fourth proportional to 15,942.22, 21,985.02 and 12,158.68 is: 16,767.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,942.22 : 21,985.02 = 12,158.68 : x
  2. Step 2: Convert to fraction form
    15,942.22/21,985.02 = 12,158.68/x
  3. Step 3: Cross multiply
    15,942.22x = 21,985.02 × 12,158.68
  4. Step 4: Simplify right side
    15,942.22x = 267,308,822.97
  5. Step 5: Solve for x
    x = 267,308,822.97/15,942.22
  6. Step 6: Final answer
    x = 16,767.35

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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.