Home / 20,927.84-31,391.70-5,345.48

Finding the Fourth Proportional to 20,927.84, 31,391.70 and 5,345.48

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Solution

The fourth proportional to 20,927.84, 31,391.70 and 5,345.48 is: 8,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.84 : 31,391.70 = 5,345.48 : x
  2. Step 2: Convert to fraction form
    20,927.84/31,391.70 = 5,345.48/x
  3. Step 3: Cross multiply
    20,927.84x = 31,391.70 × 5,345.48
  4. Step 4: Simplify right side
    20,927.84x = 167,803,704.52
  5. Step 5: Solve for x
    x = 167,803,704.52/20,927.84
  6. Step 6: Final answer
    x = 8,018.20

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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.