Home / 15,719.20-21,692.27-9,006.46

Finding the Fourth Proportional to 15,719.20, 21,692.27 and 9,006.46

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Solution

The fourth proportional to 15,719.20, 21,692.27 and 9,006.46 is: 12,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.20 : 21,692.27 = 9,006.46 : x
  2. Step 2: Convert to fraction form
    15,719.20/21,692.27 = 9,006.46/x
  3. Step 3: Cross multiply
    15,719.20x = 21,692.27 × 9,006.46
  4. Step 4: Simplify right side
    15,719.20x = 195,370,530.35
  5. Step 5: Solve for x
    x = 195,370,530.35/15,719.20
  6. Step 6: Final answer
    x = 12,428.79

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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.