Home / 28,087.16-42,127.95-7,310.66

Finding the Fourth Proportional to 28,087.16, 42,127.95 and 7,310.66

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Solution

The fourth proportional to 28,087.16, 42,127.95 and 7,310.66 is: 10,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.16 : 42,127.95 = 7,310.66 : x
  2. Step 2: Convert to fraction form
    28,087.16/42,127.95 = 7,310.66/x
  3. Step 3: Cross multiply
    28,087.16x = 42,127.95 × 7,310.66
  4. Step 4: Simplify right side
    28,087.16x = 307,983,118.95
  5. Step 5: Solve for x
    x = 307,983,118.95/28,087.16
  6. Step 6: Final answer
    x = 10,965.26

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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.