Home / 11,515.17-15,890.36-6,798.54

Finding the Fourth Proportional to 11,515.17, 15,890.36 and 6,798.54

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Solution

The fourth proportional to 11,515.17, 15,890.36 and 6,798.54 is: 9,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.17 : 15,890.36 = 6,798.54 : x
  2. Step 2: Convert to fraction form
    11,515.17/15,890.36 = 6,798.54/x
  3. Step 3: Cross multiply
    11,515.17x = 15,890.36 × 6,798.54
  4. Step 4: Simplify right side
    11,515.17x = 108,031,214.08
  5. Step 5: Solve for x
    x = 108,031,214.08/11,515.17
  6. Step 6: Final answer
    x = 9,381.64

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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.