Home / 21,455.67-32,026.80-19,872.72

Finding the Fourth Proportional to 21,455.67, 32,026.80 and 19,872.72

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Solution

The fourth proportional to 21,455.67, 32,026.80 and 19,872.72 is: 29,663.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.67 : 32,026.80 = 19,872.72 : x
  2. Step 2: Convert to fraction form
    21,455.67/32,026.80 = 19,872.72/x
  3. Step 3: Cross multiply
    21,455.67x = 32,026.80 × 19,872.72
  4. Step 4: Simplify right side
    21,455.67x = 636,459,628.90
  5. Step 5: Solve for x
    x = 636,459,628.90/21,455.67
  6. Step 6: Final answer
    x = 29,663.94

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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.