Home / 11,390.07-15,719.73-6,913.56

Finding the Fourth Proportional to 11,390.07, 15,719.73 and 6,913.56

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Solution

The fourth proportional to 11,390.07, 15,719.73 and 6,913.56 is: 9,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.07 : 15,719.73 = 6,913.56 : x
  2. Step 2: Convert to fraction form
    11,390.07/15,719.73 = 6,913.56/x
  3. Step 3: Cross multiply
    11,390.07x = 15,719.73 × 6,913.56
  4. Step 4: Simplify right side
    11,390.07x = 108,679,296.54
  5. Step 5: Solve for x
    x = 108,679,296.54/11,390.07
  6. Step 6: Final answer
    x = 9,541.58

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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.