Home / 21,047.23-29,032.55-15,375.04

Finding the Fourth Proportional to 21,047.23, 29,032.55 and 15,375.04

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Solution

The fourth proportional to 21,047.23, 29,032.55 and 15,375.04 is: 21,208.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.23 : 29,032.55 = 15,375.04 : x
  2. Step 2: Convert to fraction form
    21,047.23/29,032.55 = 15,375.04/x
  3. Step 3: Cross multiply
    21,047.23x = 29,032.55 × 15,375.04
  4. Step 4: Simplify right side
    21,047.23x = 446,376,583.11
  5. Step 5: Solve for x
    x = 446,376,583.11/21,047.23
  6. Step 6: Final answer
    x = 21,208.33

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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.