Home / 21,228.99-31,838.01-8,752.56

Finding the Fourth Proportional to 21,228.99, 31,838.01 and 8,752.56

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Solution

The fourth proportional to 21,228.99, 31,838.01 and 8,752.56 is: 13,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.99 : 31,838.01 = 8,752.56 : x
  2. Step 2: Convert to fraction form
    21,228.99/31,838.01 = 8,752.56/x
  3. Step 3: Cross multiply
    21,228.99x = 31,838.01 × 8,752.56
  4. Step 4: Simplify right side
    21,228.99x = 278,664,092.81
  5. Step 5: Solve for x
    x = 278,664,092.81/21,228.99
  6. Step 6: Final answer
    x = 13,126.58

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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.