Home / 15,395.20-21,244.95-8,680.77

Finding the Fourth Proportional to 15,395.20, 21,244.95 and 8,680.77

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Solution

The fourth proportional to 15,395.20, 21,244.95 and 8,680.77 is: 11,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.20 : 21,244.95 = 8,680.77 : x
  2. Step 2: Convert to fraction form
    15,395.20/21,244.95 = 8,680.77/x
  3. Step 3: Cross multiply
    15,395.20x = 21,244.95 × 8,680.77
  4. Step 4: Simplify right side
    15,395.20x = 184,422,524.61
  5. Step 5: Solve for x
    x = 184,422,524.61/15,395.20
  6. Step 6: Final answer
    x = 11,979.22

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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.