Home / 21,091.92-31,637.88-5,509.52

Finding the Fourth Proportional to 21,091.92, 31,637.88 and 5,509.52

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Solution

The fourth proportional to 21,091.92, 31,637.88 and 5,509.52 is: 8,264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.92 : 31,637.88 = 5,509.52 : x
  2. Step 2: Convert to fraction form
    21,091.92/31,637.88 = 5,509.52/x
  3. Step 3: Cross multiply
    21,091.92x = 31,637.88 × 5,509.52
  4. Step 4: Simplify right side
    21,091.92x = 174,309,532.62
  5. Step 5: Solve for x
    x = 174,309,532.62/21,091.92
  6. Step 6: Final answer
    x = 8,264.28

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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.