Home / 20,031.84-27,640.44-12,475.76

Finding the Fourth Proportional to 20,031.84, 27,640.44 and 12,475.76

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Solution

The fourth proportional to 20,031.84, 27,640.44 and 12,475.76 is: 17,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.84 : 27,640.44 = 12,475.76 : x
  2. Step 2: Convert to fraction form
    20,031.84/27,640.44 = 12,475.76/x
  3. Step 3: Cross multiply
    20,031.84x = 27,640.44 × 12,475.76
  4. Step 4: Simplify right side
    20,031.84x = 344,835,357.53
  5. Step 5: Solve for x
    x = 344,835,357.53/20,031.84
  6. Step 6: Final answer
    x = 17,214.36

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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.