Home / 31,077.90-42,889.90-17,653.34

Finding the Fourth Proportional to 31,077.90, 42,889.90 and 17,653.34

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Solution

The fourth proportional to 31,077.90, 42,889.90 and 17,653.34 is: 24,362.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,077.90 : 42,889.90 = 17,653.34 : x
  2. Step 2: Convert to fraction form
    31,077.90/42,889.90 = 17,653.34/x
  3. Step 3: Cross multiply
    31,077.90x = 42,889.90 × 17,653.34
  4. Step 4: Simplify right side
    31,077.90x = 757,149,987.27
  5. Step 5: Solve for x
    x = 757,149,987.27/31,077.90
  6. Step 6: Final answer
    x = 24,362.97

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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.