Home / 21,124.80-31,723.65-11,283.30

Finding the Fourth Proportional to 21,124.80, 31,723.65 and 11,283.30

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Solution

The fourth proportional to 21,124.80, 31,723.65 and 11,283.30 is: 16,944.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.80 : 31,723.65 = 11,283.30 : x
  2. Step 2: Convert to fraction form
    21,124.80/31,723.65 = 11,283.30/x
  3. Step 3: Cross multiply
    21,124.80x = 31,723.65 × 11,283.30
  4. Step 4: Simplify right side
    21,124.80x = 357,947,460.05
  5. Step 5: Solve for x
    x = 357,947,460.05/21,124.80
  6. Step 6: Final answer
    x = 16,944.42

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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.