Home / 11,102.70-15,322.19-6,386.98

Finding the Fourth Proportional to 11,102.70, 15,322.19 and 6,386.98

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Solution

The fourth proportional to 11,102.70, 15,322.19 and 6,386.98 is: 8,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,102.70 : 15,322.19 = 6,386.98 : x
  2. Step 2: Convert to fraction form
    11,102.70/15,322.19 = 6,386.98/x
  3. Step 3: Cross multiply
    11,102.70x = 15,322.19 × 6,386.98
  4. Step 4: Simplify right side
    11,102.70x = 97,862,454.44
  5. Step 5: Solve for x
    x = 97,862,454.44/11,102.70
  6. Step 6: Final answer
    x = 8,814.30

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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.