Home / 15,251.90-21,039.55-8,960.63

Finding the Fourth Proportional to 15,251.90, 21,039.55 and 8,960.63

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Solution

The fourth proportional to 15,251.90, 21,039.55 and 8,960.63 is: 12,360.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,251.90 : 21,039.55 = 8,960.63 : x
  2. Step 2: Convert to fraction form
    15,251.90/21,039.55 = 8,960.63/x
  3. Step 3: Cross multiply
    15,251.90x = 21,039.55 × 8,960.63
  4. Step 4: Simplify right side
    15,251.90x = 188,527,495.32
  5. Step 5: Solve for x
    x = 188,527,495.32/15,251.90
  6. Step 6: Final answer
    x = 12,360.92

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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.