Home / 15,943.32-21,999.14-8,869.56

Finding the Fourth Proportional to 15,943.32, 21,999.14 and 8,869.56

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Solution

The fourth proportional to 15,943.32, 21,999.14 and 8,869.56 is: 12,238.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,943.32 : 21,999.14 = 8,869.56 : x
  2. Step 2: Convert to fraction form
    15,943.32/21,999.14 = 8,869.56/x
  3. Step 3: Cross multiply
    15,943.32x = 21,999.14 × 8,869.56
  4. Step 4: Simplify right side
    15,943.32x = 195,122,692.18
  5. Step 5: Solve for x
    x = 195,122,692.18/15,943.32
  6. Step 6: Final answer
    x = 12,238.52

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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.