Home / 28,117.11-42,134.05-12,307.53

Finding the Fourth Proportional to 28,117.11, 42,134.05 and 12,307.53

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Solution

The fourth proportional to 28,117.11, 42,134.05 and 12,307.53 is: 18,443.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.11 : 42,134.05 = 12,307.53 : x
  2. Step 2: Convert to fraction form
    28,117.11/42,134.05 = 12,307.53/x
  3. Step 3: Cross multiply
    28,117.11x = 42,134.05 × 12,307.53
  4. Step 4: Simplify right side
    28,117.11x = 518,566,084.40
  5. Step 5: Solve for x
    x = 518,566,084.40/28,117.11
  6. Step 6: Final answer
    x = 18,443.08

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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.