Home / 21,018.71-31,532.68-6,228.79

Finding the Fourth Proportional to 21,018.71, 31,532.68 and 6,228.79

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Solution

The fourth proportional to 21,018.71, 31,532.68 and 6,228.79 is: 9,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.71 : 31,532.68 = 6,228.79 : x
  2. Step 2: Convert to fraction form
    21,018.71/31,532.68 = 6,228.79/x
  3. Step 3: Cross multiply
    21,018.71x = 31,532.68 × 6,228.79
  4. Step 4: Simplify right side
    21,018.71x = 196,410,284.19
  5. Step 5: Solve for x
    x = 196,410,284.19/21,018.71
  6. Step 6: Final answer
    x = 9,344.55

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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.