Home / 18,898.11-26,077.86-10,938.78

Finding the Fourth Proportional to 18,898.11, 26,077.86 and 10,938.78

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Solution

The fourth proportional to 18,898.11, 26,077.86 and 10,938.78 is: 15,094.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.11 : 26,077.86 = 10,938.78 : x
  2. Step 2: Convert to fraction form
    18,898.11/26,077.86 = 10,938.78/x
  3. Step 3: Cross multiply
    18,898.11x = 26,077.86 × 10,938.78
  4. Step 4: Simplify right side
    18,898.11x = 285,259,973.41
  5. Step 5: Solve for x
    x = 285,259,973.41/18,898.11
  6. Step 6: Final answer
    x = 15,094.63

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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.