Home / 15,589.95-21,511.20-8,875.17

Finding the Fourth Proportional to 15,589.95, 21,511.20 and 8,875.17

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Solution

The fourth proportional to 15,589.95, 21,511.20 and 8,875.17 is: 12,246.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.95 : 21,511.20 = 8,875.17 : x
  2. Step 2: Convert to fraction form
    15,589.95/21,511.20 = 8,875.17/x
  3. Step 3: Cross multiply
    15,589.95x = 21,511.20 × 8,875.17
  4. Step 4: Simplify right side
    15,589.95x = 190,915,556.90
  5. Step 5: Solve for x
    x = 190,915,556.90/15,589.95
  6. Step 6: Final answer
    x = 12,246.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.