Home / 21,229.02-31,848.16-6,439.09

Finding the Fourth Proportional to 21,229.02, 31,848.16 and 6,439.09

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Solution

The fourth proportional to 21,229.02, 31,848.16 and 6,439.09 is: 9,660.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.02 : 31,848.16 = 6,439.09 : x
  2. Step 2: Convert to fraction form
    21,229.02/31,848.16 = 6,439.09/x
  3. Step 3: Cross multiply
    21,229.02x = 31,848.16 × 6,439.09
  4. Step 4: Simplify right side
    21,229.02x = 205,073,220.76
  5. Step 5: Solve for x
    x = 205,073,220.76/21,229.02
  6. Step 6: Final answer
    x = 9,660.04

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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.