Home / 9,980.20-13,764.90-6,444.28

Finding the Fourth Proportional to 9,980.20, 13,764.90 and 6,444.28

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Solution

The fourth proportional to 9,980.20, 13,764.90 and 6,444.28 is: 8,888.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.20 : 13,764.90 = 6,444.28 : x
  2. Step 2: Convert to fraction form
    9,980.20/13,764.90 = 6,444.28/x
  3. Step 3: Cross multiply
    9,980.20x = 13,764.90 × 6,444.28
  4. Step 4: Simplify right side
    9,980.20x = 88,704,869.77
  5. Step 5: Solve for x
    x = 88,704,869.77/9,980.20
  6. Step 6: Final answer
    x = 8,888.09

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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.