Home / 11,389.31-15,719.07-9,497.55

Finding the Fourth Proportional to 11,389.31, 15,719.07 and 9,497.55

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Solution

The fourth proportional to 11,389.31, 15,719.07 and 9,497.55 is: 13,108.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.31 : 15,719.07 = 9,497.55 : x
  2. Step 2: Convert to fraction form
    11,389.31/15,719.07 = 9,497.55/x
  3. Step 3: Cross multiply
    11,389.31x = 15,719.07 × 9,497.55
  4. Step 4: Simplify right side
    11,389.31x = 149,292,653.28
  5. Step 5: Solve for x
    x = 149,292,653.28/11,389.31
  6. Step 6: Final answer
    x = 13,108.14

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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.