Home / 21,063.60-31,584.81-7,018.70

Finding the Fourth Proportional to 21,063.60, 31,584.81 and 7,018.70

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Solution

The fourth proportional to 21,063.60, 31,584.81 and 7,018.70 is: 10,524.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.60 : 31,584.81 = 7,018.70 : x
  2. Step 2: Convert to fraction form
    21,063.60/31,584.81 = 7,018.70/x
  3. Step 3: Cross multiply
    21,063.60x = 31,584.81 × 7,018.70
  4. Step 4: Simplify right side
    21,063.60x = 221,684,384.91
  5. Step 5: Solve for x
    x = 221,684,384.91/21,063.60
  6. Step 6: Final answer
    x = 10,524.53

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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.