Home / 9,974.40-13,770.40-6,621.74

Finding the Fourth Proportional to 9,974.40, 13,770.40 and 6,621.74

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Solution

The fourth proportional to 9,974.40, 13,770.40 and 6,621.74 is: 9,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,974.40 : 13,770.40 = 6,621.74 : x
  2. Step 2: Convert to fraction form
    9,974.40/13,770.40 = 6,621.74/x
  3. Step 3: Cross multiply
    9,974.40x = 13,770.40 × 6,621.74
  4. Step 4: Simplify right side
    9,974.40x = 91,184,008.50
  5. Step 5: Solve for x
    x = 91,184,008.50/9,974.40
  6. Step 6: Final answer
    x = 9,141.80

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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.