Home / 21,229.04-31,843.64-6,438.08

Finding the Fourth Proportional to 21,229.04, 31,843.64 and 6,438.08

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Solution

The fourth proportional to 21,229.04, 31,843.64 and 6,438.08 is: 9,657.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.04 : 31,843.64 = 6,438.08 : x
  2. Step 2: Convert to fraction form
    21,229.04/31,843.64 = 6,438.08/x
  3. Step 3: Cross multiply
    21,229.04x = 31,843.64 × 6,438.08
  4. Step 4: Simplify right side
    21,229.04x = 205,011,710.40
  5. Step 5: Solve for x
    x = 205,011,710.40/21,229.04
  6. Step 6: Final answer
    x = 9,657.14

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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.