Home / 21,275.61-31,910.98-5,694.45

Finding the Fourth Proportional to 21,275.61, 31,910.98 and 5,694.45

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Solution

The fourth proportional to 21,275.61, 31,910.98 and 5,694.45 is: 8,541.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.61 : 31,910.98 = 5,694.45 : x
  2. Step 2: Convert to fraction form
    21,275.61/31,910.98 = 5,694.45/x
  3. Step 3: Cross multiply
    21,275.61x = 31,910.98 × 5,694.45
  4. Step 4: Simplify right side
    21,275.61x = 181,715,480.06
  5. Step 5: Solve for x
    x = 181,715,480.06/21,275.61
  6. Step 6: Final answer
    x = 8,541.02

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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.