Home / 21,269.13-29,302.26-15,290.46

Finding the Fourth Proportional to 21,269.13, 29,302.26 and 15,290.46

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Solution

The fourth proportional to 21,269.13, 29,302.26 and 15,290.46 is: 21,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.13 : 29,302.26 = 15,290.46 : x
  2. Step 2: Convert to fraction form
    21,269.13/29,302.26 = 15,290.46/x
  3. Step 3: Cross multiply
    21,269.13x = 29,302.26 × 15,290.46
  4. Step 4: Simplify right side
    21,269.13x = 448,045,034.44
  5. Step 5: Solve for x
    x = 448,045,034.44/21,269.13
  6. Step 6: Final answer
    x = 21,065.51

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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.