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Finding the Fourth Proportional to 19,165.55, 28,751.98 and 6,689.14

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Solution

The fourth proportional to 19,165.55, 28,751.98 and 6,689.14 is: 10,034.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.55 : 28,751.98 = 6,689.14 : x
  2. Step 2: Convert to fraction form
    19,165.55/28,751.98 = 6,689.14/x
  3. Step 3: Cross multiply
    19,165.55x = 28,751.98 × 6,689.14
  4. Step 4: Simplify right side
    19,165.55x = 192,325,875.74
  5. Step 5: Solve for x
    x = 192,325,875.74/19,165.55
  6. Step 6: Final answer
    x = 10,034.98

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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.