Home / 21,125.84-31,686.36-5,544.68

Finding the Fourth Proportional to 21,125.84, 31,686.36 and 5,544.68

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Solution

The fourth proportional to 21,125.84, 31,686.36 and 5,544.68 is: 8,316.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.84 : 31,686.36 = 5,544.68 : x
  2. Step 2: Convert to fraction form
    21,125.84/31,686.36 = 5,544.68/x
  3. Step 3: Cross multiply
    21,125.84x = 31,686.36 × 5,544.68
  4. Step 4: Simplify right side
    21,125.84x = 175,690,726.56
  5. Step 5: Solve for x
    x = 175,690,726.56/21,125.84
  6. Step 6: Final answer
    x = 8,316.39

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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.