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Finding the Fourth Proportional to 18,701.69, 28,073.06 and 9,339.08

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Solution

The fourth proportional to 18,701.69, 28,073.06 and 9,339.08 is: 14,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.69 : 28,073.06 = 9,339.08 : x
  2. Step 2: Convert to fraction form
    18,701.69/28,073.06 = 9,339.08/x
  3. Step 3: Cross multiply
    18,701.69x = 28,073.06 × 9,339.08
  4. Step 4: Simplify right side
    18,701.69x = 262,176,506.49
  5. Step 5: Solve for x
    x = 262,176,506.49/18,701.69
  6. Step 6: Final answer
    x = 14,018.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.