Home / 28,356.12-42,530.94-7,581.24

Finding the Fourth Proportional to 28,356.12, 42,530.94 and 7,581.24

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Solution

The fourth proportional to 28,356.12, 42,530.94 and 7,581.24 is: 11,370.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.12 : 42,530.94 = 7,581.24 : x
  2. Step 2: Convert to fraction form
    28,356.12/42,530.94 = 7,581.24/x
  3. Step 3: Cross multiply
    28,356.12x = 42,530.94 × 7,581.24
  4. Step 4: Simplify right side
    28,356.12x = 322,437,263.57
  5. Step 5: Solve for x
    x = 322,437,263.57/28,356.12
  6. Step 6: Final answer
    x = 11,370.99

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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.