Home / 21,158.69-31,738.64-5,576.31

Finding the Fourth Proportional to 21,158.69, 31,738.64 and 5,576.31

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Solution

The fourth proportional to 21,158.69, 31,738.64 and 5,576.31 is: 8,364.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.69 : 31,738.64 = 5,576.31 : x
  2. Step 2: Convert to fraction form
    21,158.69/31,738.64 = 5,576.31/x
  3. Step 3: Cross multiply
    21,158.69x = 31,738.64 × 5,576.31
  4. Step 4: Simplify right side
    21,158.69x = 176,984,467.74
  5. Step 5: Solve for x
    x = 176,984,467.74/21,158.69
  6. Step 6: Final answer
    x = 8,364.63

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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.