Home / 21,298.20-31,947.30-9,634.20

Finding the Fourth Proportional to 21,298.20, 31,947.30 and 9,634.20

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Solution

The fourth proportional to 21,298.20, 31,947.30 and 9,634.20 is: 14,451.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.20 : 31,947.30 = 9,634.20 : x
  2. Step 2: Convert to fraction form
    21,298.20/31,947.30 = 9,634.20/x
  3. Step 3: Cross multiply
    21,298.20x = 31,947.30 × 9,634.20
  4. Step 4: Simplify right side
    21,298.20x = 307,786,677.66
  5. Step 5: Solve for x
    x = 307,786,677.66/21,298.20
  6. Step 6: Final answer
    x = 14,451.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.