Home / 21,230.04-31,845.12-6,439.08

Finding the Fourth Proportional to 21,230.04, 31,845.12 and 6,439.08

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Solution

The fourth proportional to 21,230.04, 31,845.12 and 6,439.08 is: 9,658.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.04 : 31,845.12 = 6,439.08 : x
  2. Step 2: Convert to fraction form
    21,230.04/31,845.12 = 6,439.08/x
  3. Step 3: Cross multiply
    21,230.04x = 31,845.12 × 6,439.08
  4. Step 4: Simplify right side
    21,230.04x = 205,053,275.29
  5. Step 5: Solve for x
    x = 205,053,275.29/21,230.04
  6. Step 6: Final answer
    x = 9,658.64

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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.