Home / 19,645.74-27,111.51-15,401.88

Finding the Fourth Proportional to 19,645.74, 27,111.51 and 15,401.88

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Solution

The fourth proportional to 19,645.74, 27,111.51 and 15,401.88 is: 21,254.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.74 : 27,111.51 = 15,401.88 : x
  2. Step 2: Convert to fraction form
    19,645.74/27,111.51 = 15,401.88/x
  3. Step 3: Cross multiply
    19,645.74x = 27,111.51 × 15,401.88
  4. Step 4: Simplify right side
    19,645.74x = 417,568,223.64
  5. Step 5: Solve for x
    x = 417,568,223.64/19,645.74
  6. Step 6: Final answer
    x = 21,254.90

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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.