Home / 21,300.72-31,950.89-5,504.39

Finding the Fourth Proportional to 21,300.72, 31,950.89 and 5,504.39

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Solution

The fourth proportional to 21,300.72, 31,950.89 and 5,504.39 is: 8,256.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.72 : 31,950.89 = 5,504.39 : x
  2. Step 2: Convert to fraction form
    21,300.72/31,950.89 = 5,504.39/x
  3. Step 3: Cross multiply
    21,300.72x = 31,950.89 × 5,504.39
  4. Step 4: Simplify right side
    21,300.72x = 175,870,159.41
  5. Step 5: Solve for x
    x = 175,870,159.41/21,300.72
  6. Step 6: Final answer
    x = 8,256.54

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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.