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Finding the Fourth Proportional to 18,885.44, 26,060 and 10,386.56

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Solution

The fourth proportional to 18,885.44, 26,060 and 10,386.56 is: 14,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.44 : 26,060 = 10,386.56 : x
  2. Step 2: Convert to fraction form
    18,885.44/26,060 = 10,386.56/x
  3. Step 3: Cross multiply
    18,885.44x = 26,060 × 10,386.56
  4. Step 4: Simplify right side
    18,885.44x = 270,673,753.60
  5. Step 5: Solve for x
    x = 270,673,753.60/18,885.44
  6. Step 6: Final answer
    x = 14,332.40

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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.