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Finding the Fourth Proportional to 18,899.62, 28,349.70 and 6,587.62

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Solution

The fourth proportional to 18,899.62, 28,349.70 and 6,587.62 is: 9,881.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.62 : 28,349.70 = 6,587.62 : x
  2. Step 2: Convert to fraction form
    18,899.62/28,349.70 = 6,587.62/x
  3. Step 3: Cross multiply
    18,899.62x = 28,349.70 × 6,587.62
  4. Step 4: Simplify right side
    18,899.62x = 186,757,050.71
  5. Step 5: Solve for x
    x = 186,757,050.71/18,899.62
  6. Step 6: Final answer
    x = 9,881.52

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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.