Home / 21,228.76-31,819.26-10,126.36

Finding the Fourth Proportional to 21,228.76, 31,819.26 and 10,126.36

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Solution

The fourth proportional to 21,228.76, 31,819.26 and 10,126.36 is: 15,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.76 : 31,819.26 = 10,126.36 : x
  2. Step 2: Convert to fraction form
    21,228.76/31,819.26 = 10,126.36/x
  3. Step 3: Cross multiply
    21,228.76x = 31,819.26 × 10,126.36
  4. Step 4: Simplify right side
    21,228.76x = 322,213,281.69
  5. Step 5: Solve for x
    x = 322,213,281.69/21,228.76
  6. Step 6: Final answer
    x = 15,178.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.