Home / 21,281.30-31,921.33-5,698.92

Finding the Fourth Proportional to 21,281.30, 31,921.33 and 5,698.92

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Solution

The fourth proportional to 21,281.30, 31,921.33 and 5,698.92 is: 8,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.30 : 31,921.33 = 5,698.92 : x
  2. Step 2: Convert to fraction form
    21,281.30/31,921.33 = 5,698.92/x
  3. Step 3: Cross multiply
    21,281.30x = 31,921.33 × 5,698.92
  4. Step 4: Simplify right side
    21,281.30x = 181,917,105.96
  5. Step 5: Solve for x
    x = 181,917,105.96/21,281.30
  6. Step 6: Final answer
    x = 8,548.21

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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.