Home / 31,195.34-42,976.59-21,747.02

Finding the Fourth Proportional to 31,195.34, 42,976.59 and 21,747.02

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Solution

The fourth proportional to 31,195.34, 42,976.59 and 21,747.02 is: 29,960.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,195.34 : 42,976.59 = 21,747.02 : x
  2. Step 2: Convert to fraction form
    31,195.34/42,976.59 = 21,747.02/x
  3. Step 3: Cross multiply
    31,195.34x = 42,976.59 × 21,747.02
  4. Step 4: Simplify right side
    31,195.34x = 934,612,762.26
  5. Step 5: Solve for x
    x = 934,612,762.26/31,195.34
  6. Step 6: Final answer
    x = 29,960.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.