Home / 21,013.65-31,523.31-6,968.79

Finding the Fourth Proportional to 21,013.65, 31,523.31 and 6,968.79

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Solution

The fourth proportional to 21,013.65, 31,523.31 and 6,968.79 is: 10,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.65 : 31,523.31 = 6,968.79 : x
  2. Step 2: Convert to fraction form
    21,013.65/31,523.31 = 6,968.79/x
  3. Step 3: Cross multiply
    21,013.65x = 31,523.31 × 6,968.79
  4. Step 4: Simplify right side
    21,013.65x = 219,679,327.49
  5. Step 5: Solve for x
    x = 219,679,327.49/21,013.65
  6. Step 6: Final answer
    x = 10,454.13

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1.5x scale

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.