Home / 21,195.95-29,234.25-15,528.65

Finding the Fourth Proportional to 21,195.95, 29,234.25 and 15,528.65

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Solution

The fourth proportional to 21,195.95, 29,234.25 and 15,528.65 is: 21,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.95 : 29,234.25 = 15,528.65 : x
  2. Step 2: Convert to fraction form
    21,195.95/29,234.25 = 15,528.65/x
  3. Step 3: Cross multiply
    21,195.95x = 29,234.25 × 15,528.65
  4. Step 4: Simplify right side
    21,195.95x = 453,968,290.09
  5. Step 5: Solve for x
    x = 453,968,290.09/21,195.95
  6. Step 6: Final answer
    x = 21,417.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.