Home / 21,153.29-29,176.01-15,191.08

Finding the Fourth Proportional to 21,153.29, 29,176.01 and 15,191.08

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Solution

The fourth proportional to 21,153.29, 29,176.01 and 15,191.08 is: 20,952.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.29 : 29,176.01 = 15,191.08 : x
  2. Step 2: Convert to fraction form
    21,153.29/29,176.01 = 15,191.08/x
  3. Step 3: Cross multiply
    21,153.29x = 29,176.01 × 15,191.08
  4. Step 4: Simplify right side
    21,153.29x = 443,215,010.06
  5. Step 5: Solve for x
    x = 443,215,010.06/21,153.29
  6. Step 6: Final answer
    x = 20,952.54

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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.