Home / 14,989.18-20,685.06-8,274.80

Finding the Fourth Proportional to 14,989.18, 20,685.06 and 8,274.80

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Solution

The fourth proportional to 14,989.18, 20,685.06 and 8,274.80 is: 11,419.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,989.18 : 20,685.06 = 8,274.80 : x
  2. Step 2: Convert to fraction form
    14,989.18/20,685.06 = 8,274.80/x
  3. Step 3: Cross multiply
    14,989.18x = 20,685.06 × 8,274.80
  4. Step 4: Simplify right side
    14,989.18x = 171,164,734.49
  5. Step 5: Solve for x
    x = 171,164,734.49/14,989.18
  6. Step 6: Final answer
    x = 11,419.22

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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.