Home / 31,721.31-47,581.81-8,029.08

Finding the Fourth Proportional to 31,721.31, 47,581.81 and 8,029.08

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Solution

The fourth proportional to 31,721.31, 47,581.81 and 8,029.08 is: 12,043.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.31 : 47,581.81 = 8,029.08 : x
  2. Step 2: Convert to fraction form
    31,721.31/47,581.81 = 8,029.08/x
  3. Step 3: Cross multiply
    31,721.31x = 47,581.81 × 8,029.08
  4. Step 4: Simplify right side
    31,721.31x = 382,038,159.03
  5. Step 5: Solve for x
    x = 382,038,159.03/31,721.31
  6. Step 6: Final answer
    x = 12,043.58

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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.