Home / 19,885.56-27,442.86-11,389.08

Finding the Fourth Proportional to 19,885.56, 27,442.86 and 11,389.08

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Solution

The fourth proportional to 19,885.56, 27,442.86 and 11,389.08 is: 15,717.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.56 : 27,442.86 = 11,389.08 : x
  2. Step 2: Convert to fraction form
    19,885.56/27,442.86 = 11,389.08/x
  3. Step 3: Cross multiply
    19,885.56x = 27,442.86 × 11,389.08
  4. Step 4: Simplify right side
    19,885.56x = 312,548,927.97
  5. Step 5: Solve for x
    x = 312,548,927.97/19,885.56
  6. Step 6: Final answer
    x = 15,717.38

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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.