Home / 31,044.31-42,856.02-19,117.87

Finding the Fourth Proportional to 31,044.31, 42,856.02 and 19,117.87

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Solution

The fourth proportional to 31,044.31, 42,856.02 and 19,117.87 is: 26,391.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,044.31 : 42,856.02 = 19,117.87 : x
  2. Step 2: Convert to fraction form
    31,044.31/42,856.02 = 19,117.87/x
  3. Step 3: Cross multiply
    31,044.31x = 42,856.02 × 19,117.87
  4. Step 4: Simplify right side
    31,044.31x = 819,315,509.21
  5. Step 5: Solve for x
    x = 819,315,509.21/31,044.31
  6. Step 6: Final answer
    x = 26,391.81

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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.