Home / 31,968.12-47,968.40-21,558

Finding the Fourth Proportional to 31,968.12, 47,968.40 and 21,558

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Solution

The fourth proportional to 31,968.12, 47,968.40 and 21,558 is: 32,347.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,968.12 : 47,968.40 = 21,558 : x
  2. Step 2: Convert to fraction form
    31,968.12/47,968.40 = 21,558/x
  3. Step 3: Cross multiply
    31,968.12x = 47,968.40 × 21,558
  4. Step 4: Simplify right side
    31,968.12x = 1,034,102,767.20
  5. Step 5: Solve for x
    x = 1,034,102,767.20/31,968.12
  6. Step 6: Final answer
    x = 32,347.94

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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.