Home / 20,282.79-27,988.34-11,897.67

Finding the Fourth Proportional to 20,282.79, 27,988.34 and 11,897.67

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Solution

The fourth proportional to 20,282.79, 27,988.34 and 11,897.67 is: 16,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.79 : 27,988.34 = 11,897.67 : x
  2. Step 2: Convert to fraction form
    20,282.79/27,988.34 = 11,897.67/x
  3. Step 3: Cross multiply
    20,282.79x = 27,988.34 × 11,897.67
  4. Step 4: Simplify right side
    20,282.79x = 332,995,973.68
  5. Step 5: Solve for x
    x = 332,995,973.68/20,282.79
  6. Step 6: Final answer
    x = 16,417.66

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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.