Home / 14,487.20-19,991.52-8,199.68

Finding the Fourth Proportional to 14,487.20, 19,991.52 and 8,199.68

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Solution

The fourth proportional to 14,487.20, 19,991.52 and 8,199.68 is: 11,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.20 : 19,991.52 = 8,199.68 : x
  2. Step 2: Convert to fraction form
    14,487.20/19,991.52 = 8,199.68/x
  3. Step 3: Cross multiply
    14,487.20x = 19,991.52 × 8,199.68
  4. Step 4: Simplify right side
    14,487.20x = 163,924,066.71
  5. Step 5: Solve for x
    x = 163,924,066.71/14,487.20
  6. Step 6: Final answer
    x = 11,315.10

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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.