Home / 21,026.13-29,018.03-15,711.72

Finding the Fourth Proportional to 21,026.13, 29,018.03 and 15,711.72

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Solution

The fourth proportional to 21,026.13, 29,018.03 and 15,711.72 is: 21,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.13 : 29,018.03 = 15,711.72 : x
  2. Step 2: Convert to fraction form
    21,026.13/29,018.03 = 15,711.72/x
  3. Step 3: Cross multiply
    21,026.13x = 29,018.03 × 15,711.72
  4. Step 4: Simplify right side
    21,026.13x = 455,923,162.31
  5. Step 5: Solve for x
    x = 455,923,162.31/21,026.13
  6. Step 6: Final answer
    x = 21,683.65

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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.