Home / 20,732.51-31,112.10-20,655.98

Finding the Fourth Proportional to 20,732.51, 31,112.10 and 20,655.98

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Solution

The fourth proportional to 20,732.51, 31,112.10 and 20,655.98 is: 30,997.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.51 : 31,112.10 = 20,655.98 : x
  2. Step 2: Convert to fraction form
    20,732.51/31,112.10 = 20,655.98/x
  3. Step 3: Cross multiply
    20,732.51x = 31,112.10 × 20,655.98
  4. Step 4: Simplify right side
    20,732.51x = 642,650,915.36
  5. Step 5: Solve for x
    x = 642,650,915.36/20,732.51
  6. Step 6: Final answer
    x = 30,997.26

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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.