Home / 14,991.40-20,688.13-8,277.04

Finding the Fourth Proportional to 14,991.40, 20,688.13 and 8,277.04

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Solution

The fourth proportional to 14,991.40, 20,688.13 and 8,277.04 is: 11,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.40 : 20,688.13 = 8,277.04 : x
  2. Step 2: Convert to fraction form
    14,991.40/20,688.13 = 8,277.04/x
  3. Step 3: Cross multiply
    14,991.40x = 20,688.13 × 8,277.04
  4. Step 4: Simplify right side
    14,991.40x = 171,236,352.81
  5. Step 5: Solve for x
    x = 171,236,352.81/14,991.40
  6. Step 6: Final answer
    x = 11,422.31

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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.