Home / 21,785.30-32,431.59-21,655.70

Finding the Fourth Proportional to 21,785.30, 32,431.59 and 21,655.70

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Solution

The fourth proportional to 21,785.30, 32,431.59 and 21,655.70 is: 32,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.30 : 32,431.59 = 21,655.70 : x
  2. Step 2: Convert to fraction form
    21,785.30/32,431.59 = 21,655.70/x
  3. Step 3: Cross multiply
    21,785.30x = 32,431.59 × 21,655.70
  4. Step 4: Simplify right side
    21,785.30x = 702,328,675.28
  5. Step 5: Solve for x
    x = 702,328,675.28/21,785.30
  6. Step 6: Final answer
    x = 32,238.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.