Home / 10,899.87-16,327.61-9,991.66

Finding the Fourth Proportional to 10,899.87, 16,327.61 and 9,991.66

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Solution

The fourth proportional to 10,899.87, 16,327.61 and 9,991.66 is: 14,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.87 : 16,327.61 = 9,991.66 : x
  2. Step 2: Convert to fraction form
    10,899.87/16,327.61 = 9,991.66/x
  3. Step 3: Cross multiply
    10,899.87x = 16,327.61 × 9,991.66
  4. Step 4: Simplify right side
    10,899.87x = 163,139,911.89
  5. Step 5: Solve for x
    x = 163,139,911.89/10,899.87
  6. Step 6: Final answer
    x = 14,967.14

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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.