Home / 21,131.43-29,130.32-16,086.87

Finding the Fourth Proportional to 21,131.43, 29,130.32 and 16,086.87

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Solution

The fourth proportional to 21,131.43, 29,130.32 and 16,086.87 is: 22,176.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.43 : 29,130.32 = 16,086.87 : x
  2. Step 2: Convert to fraction form
    21,131.43/29,130.32 = 16,086.87/x
  3. Step 3: Cross multiply
    21,131.43x = 29,130.32 × 16,086.87
  4. Step 4: Simplify right side
    21,131.43x = 468,615,590.46
  5. Step 5: Solve for x
    x = 468,615,590.46/21,131.43
  6. Step 6: Final answer
    x = 22,176.24

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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.