Home / 11,271.50-15,555.84-6,491.62

Finding the Fourth Proportional to 11,271.50, 15,555.84 and 6,491.62

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Solution

The fourth proportional to 11,271.50, 15,555.84 and 6,491.62 is: 8,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.50 : 15,555.84 = 6,491.62 : x
  2. Step 2: Convert to fraction form
    11,271.50/15,555.84 = 6,491.62/x
  3. Step 3: Cross multiply
    11,271.50x = 15,555.84 × 6,491.62
  4. Step 4: Simplify right side
    11,271.50x = 100,982,602.06
  5. Step 5: Solve for x
    x = 100,982,602.06/11,271.50
  6. Step 6: Final answer
    x = 8,959.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.