Home / 21,277.50-31,916.25-5,694.72

Finding the Fourth Proportional to 21,277.50, 31,916.25 and 5,694.72

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Solution

The fourth proportional to 21,277.50, 31,916.25 and 5,694.72 is: 8,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.50 : 31,916.25 = 5,694.72 : x
  2. Step 2: Convert to fraction form
    21,277.50/31,916.25 = 5,694.72/x
  3. Step 3: Cross multiply
    21,277.50x = 31,916.25 × 5,694.72
  4. Step 4: Simplify right side
    21,277.50x = 181,754,107.20
  5. Step 5: Solve for x
    x = 181,754,107.20/21,277.50
  6. Step 6: Final answer
    x = 8,542.08

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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.