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Finding the Fourth Proportional to 14,783.18, 20,400.96 and 8,818.24

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Solution

The fourth proportional to 14,783.18, 20,400.96 and 8,818.24 is: 12,169.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,783.18 : 20,400.96 = 8,818.24 : x
  2. Step 2: Convert to fraction form
    14,783.18/20,400.96 = 8,818.24/x
  3. Step 3: Cross multiply
    14,783.18x = 20,400.96 × 8,818.24
  4. Step 4: Simplify right side
    14,783.18x = 179,900,561.51
  5. Step 5: Solve for x
    x = 179,900,561.51/14,783.18
  6. Step 6: Final answer
    x = 12,169.27

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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.