Home / 11,101.10-15,320.49-6,386.90

Finding the Fourth Proportional to 11,101.10, 15,320.49 and 6,386.90

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Solution

The fourth proportional to 11,101.10, 15,320.49 and 6,386.90 is: 8,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.10 : 15,320.49 = 6,386.90 : x
  2. Step 2: Convert to fraction form
    11,101.10/15,320.49 = 6,386.90/x
  3. Step 3: Cross multiply
    11,101.10x = 15,320.49 × 6,386.90
  4. Step 4: Simplify right side
    11,101.10x = 97,850,437.58
  5. Step 5: Solve for x
    x = 97,850,437.58/11,101.10
  6. Step 6: Final answer
    x = 8,814.48

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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.