Home / 21,041.16-31,531.67-15,450.65

Finding the Fourth Proportional to 21,041.16, 31,531.67 and 15,450.65

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Solution

The fourth proportional to 21,041.16, 31,531.67 and 15,450.65 is: 23,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.16 : 31,531.67 = 15,450.65 : x
  2. Step 2: Convert to fraction form
    21,041.16/31,531.67 = 15,450.65/x
  3. Step 3: Cross multiply
    21,041.16x = 31,531.67 × 15,450.65
  4. Step 4: Simplify right side
    21,041.16x = 487,184,562.17
  5. Step 5: Solve for x
    x = 487,184,562.17/21,041.16
  6. Step 6: Final answer
    x = 23,153.88

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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.