Home / 20,031.51-27,642.65-10,956.73

Finding the Fourth Proportional to 20,031.51, 27,642.65 and 10,956.73

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Solution

The fourth proportional to 20,031.51, 27,642.65 and 10,956.73 is: 15,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.51 : 27,642.65 = 10,956.73 : x
  2. Step 2: Convert to fraction form
    20,031.51/27,642.65 = 10,956.73/x
  3. Step 3: Cross multiply
    20,031.51x = 27,642.65 × 10,956.73
  4. Step 4: Simplify right side
    20,031.51x = 302,872,859.54
  5. Step 5: Solve for x
    x = 302,872,859.54/20,031.51
  6. Step 6: Final answer
    x = 15,119.82

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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.