Home / 21,207.28-31,804.80-8,557.04

Finding the Fourth Proportional to 21,207.28, 31,804.80 and 8,557.04

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Solution

The fourth proportional to 21,207.28, 31,804.80 and 8,557.04 is: 12,833.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.28 : 31,804.80 = 8,557.04 : x
  2. Step 2: Convert to fraction form
    21,207.28/31,804.80 = 8,557.04/x
  3. Step 3: Cross multiply
    21,207.28x = 31,804.80 × 8,557.04
  4. Step 4: Simplify right side
    21,207.28x = 272,154,945.79
  5. Step 5: Solve for x
    x = 272,154,945.79/21,207.28
  6. Step 6: Final answer
    x = 12,833.09

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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.