Home / 21,315.74-29,416.56-11,884.92

Finding the Fourth Proportional to 21,315.74, 29,416.56 and 11,884.92

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Solution

The fourth proportional to 21,315.74, 29,416.56 and 11,884.92 is: 16,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.74 : 29,416.56 = 11,884.92 : x
  2. Step 2: Convert to fraction form
    21,315.74/29,416.56 = 11,884.92/x
  3. Step 3: Cross multiply
    21,315.74x = 29,416.56 × 11,884.92
  4. Step 4: Simplify right side
    21,315.74x = 349,613,462.28
  5. Step 5: Solve for x
    x = 349,613,462.28/21,315.74
  6. Step 6: Final answer
    x = 16,401.66

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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.