Home / 11,108.64-15,329.36-6,139.68

Finding the Fourth Proportional to 11,108.64, 15,329.36 and 6,139.68

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Solution

The fourth proportional to 11,108.64, 15,329.36 and 6,139.68 is: 8,472.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.64 : 15,329.36 = 6,139.68 : x
  2. Step 2: Convert to fraction form
    11,108.64/15,329.36 = 6,139.68/x
  3. Step 3: Cross multiply
    11,108.64x = 15,329.36 × 6,139.68
  4. Step 4: Simplify right side
    11,108.64x = 94,117,365.00
  5. Step 5: Solve for x
    x = 94,117,365.00/11,108.64
  6. Step 6: Final answer
    x = 8,472.45

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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.