Home / 22,187.17-30,617.08-12,115.45

Finding the Fourth Proportional to 22,187.17, 30,617.08 and 12,115.45

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Solution

The fourth proportional to 22,187.17, 30,617.08 and 12,115.45 is: 16,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.17 : 30,617.08 = 12,115.45 : x
  2. Step 2: Convert to fraction form
    22,187.17/30,617.08 = 12,115.45/x
  3. Step 3: Cross multiply
    22,187.17x = 30,617.08 × 12,115.45
  4. Step 4: Simplify right side
    22,187.17x = 370,939,701.89
  5. Step 5: Solve for x
    x = 370,939,701.89/22,187.17
  6. Step 6: Final answer
    x = 16,718.66

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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.