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Finding the Fourth Proportional to 14,775.07, 20,379.16 and 8,802.13

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Solution

The fourth proportional to 14,775.07, 20,379.16 and 8,802.13 is: 12,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.07 : 20,379.16 = 8,802.13 : x
  2. Step 2: Convert to fraction form
    14,775.07/20,379.16 = 8,802.13/x
  3. Step 3: Cross multiply
    14,775.07x = 20,379.16 × 8,802.13
  4. Step 4: Simplify right side
    14,775.07x = 179,380,015.61
  5. Step 5: Solve for x
    x = 179,380,015.61/14,775.07
  6. Step 6: Final answer
    x = 12,140.72

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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.