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Finding the Fourth Proportional to 14,281.78, 21,426.36 and 8,363.65

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Solution

The fourth proportional to 14,281.78, 21,426.36 and 8,363.65 is: 12,547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.78 : 21,426.36 = 8,363.65 : x
  2. Step 2: Convert to fraction form
    14,281.78/21,426.36 = 8,363.65/x
  3. Step 3: Cross multiply
    14,281.78x = 21,426.36 × 8,363.65
  4. Step 4: Simplify right side
    14,281.78x = 179,202,575.81
  5. Step 5: Solve for x
    x = 179,202,575.81/14,281.78
  6. Step 6: Final answer
    x = 12,547.64

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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.