Home / 28,307.11-42,460.61-7,530.61

Finding the Fourth Proportional to 28,307.11, 42,460.61 and 7,530.61

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Solution

The fourth proportional to 28,307.11, 42,460.61 and 7,530.61 is: 11,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.11 : 42,460.61 = 7,530.61 : x
  2. Step 2: Convert to fraction form
    28,307.11/42,460.61 = 7,530.61/x
  3. Step 3: Cross multiply
    28,307.11x = 42,460.61 × 7,530.61
  4. Step 4: Simplify right side
    28,307.11x = 319,754,063.14
  5. Step 5: Solve for x
    x = 319,754,063.14/28,307.11
  6. Step 6: Final answer
    x = 11,295.89

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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.