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Finding the Fourth Proportional to 14,430.80, 19,909.01 and 8,763.39

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Solution

The fourth proportional to 14,430.80, 19,909.01 and 8,763.39 is: 12,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,430.80 : 19,909.01 = 8,763.39 : x
  2. Step 2: Convert to fraction form
    14,430.80/19,909.01 = 8,763.39/x
  3. Step 3: Cross multiply
    14,430.80x = 19,909.01 × 8,763.39
  4. Step 4: Simplify right side
    14,430.80x = 174,470,375.33
  5. Step 5: Solve for x
    x = 174,470,375.33/14,430.80
  6. Step 6: Final answer
    x = 12,090.14

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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.