Home / 21,557.78-32,309.25-9,698.87

Finding the Fourth Proportional to 21,557.78, 32,309.25 and 9,698.87

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Solution

The fourth proportional to 21,557.78, 32,309.25 and 9,698.87 is: 14,535.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.78 : 32,309.25 = 9,698.87 : x
  2. Step 2: Convert to fraction form
    21,557.78/32,309.25 = 9,698.87/x
  3. Step 3: Cross multiply
    21,557.78x = 32,309.25 × 9,698.87
  4. Step 4: Simplify right side
    21,557.78x = 313,363,215.55
  5. Step 5: Solve for x
    x = 313,363,215.55/21,557.78
  6. Step 6: Final answer
    x = 14,535.97

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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.