Home / 21,019.52-29,008.97-15,705.11

Finding the Fourth Proportional to 21,019.52, 29,008.97 and 15,705.11

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Solution

The fourth proportional to 21,019.52, 29,008.97 and 15,705.11 is: 21,674.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.52 : 29,008.97 = 15,705.11 : x
  2. Step 2: Convert to fraction form
    21,019.52/29,008.97 = 15,705.11/x
  3. Step 3: Cross multiply
    21,019.52x = 29,008.97 × 15,705.11
  4. Step 4: Simplify right side
    21,019.52x = 455,589,064.84
  5. Step 5: Solve for x
    x = 455,589,064.84/21,019.52
  6. Step 6: Final answer
    x = 21,674.57

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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.