Home / 31,356.76-47,036.58-7,983.40

Finding the Fourth Proportional to 31,356.76, 47,036.58 and 7,983.40

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Solution

The fourth proportional to 31,356.76, 47,036.58 and 7,983.40 is: 11,975.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356.76 : 47,036.58 = 7,983.40 : x
  2. Step 2: Convert to fraction form
    31,356.76/47,036.58 = 7,983.40/x
  3. Step 3: Cross multiply
    31,356.76x = 47,036.58 × 7,983.40
  4. Step 4: Simplify right side
    31,356.76x = 375,511,832.77
  5. Step 5: Solve for x
    x = 375,511,832.77/31,356.76
  6. Step 6: Final answer
    x = 11,975.47

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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.