Home / 28,104.23-42,170.13-12,307.11

Finding the Fourth Proportional to 28,104.23, 42,170.13 and 12,307.11

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Solution

The fourth proportional to 28,104.23, 42,170.13 and 12,307.11 is: 18,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.23 : 42,170.13 = 12,307.11 : x
  2. Step 2: Convert to fraction form
    28,104.23/42,170.13 = 12,307.11/x
  3. Step 3: Cross multiply
    28,104.23x = 42,170.13 × 12,307.11
  4. Step 4: Simplify right side
    28,104.23x = 518,992,428.62
  5. Step 5: Solve for x
    x = 518,992,428.62/28,104.23
  6. Step 6: Final answer
    x = 18,466.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.