Home / 21,236.38-31,854.76-6,445.30

Finding the Fourth Proportional to 21,236.38, 31,854.76 and 6,445.30

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Solution

The fourth proportional to 21,236.38, 31,854.76 and 6,445.30 is: 9,668.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.38 : 31,854.76 = 6,445.30 : x
  2. Step 2: Convert to fraction form
    21,236.38/31,854.76 = 6,445.30/x
  3. Step 3: Cross multiply
    21,236.38x = 31,854.76 × 6,445.30
  4. Step 4: Simplify right side
    21,236.38x = 205,313,325.35
  5. Step 5: Solve for x
    x = 205,313,325.35/21,236.38
  6. Step 6: Final answer
    x = 9,668.00

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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.