Home / 10,869.44-14,998.36-6,390.60

Finding the Fourth Proportional to 10,869.44, 14,998.36 and 6,390.60

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Solution

The fourth proportional to 10,869.44, 14,998.36 and 6,390.60 is: 8,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.44 : 14,998.36 = 6,390.60 : x
  2. Step 2: Convert to fraction form
    10,869.44/14,998.36 = 6,390.60/x
  3. Step 3: Cross multiply
    10,869.44x = 14,998.36 × 6,390.60
  4. Step 4: Simplify right side
    10,869.44x = 95,848,519.42
  5. Step 5: Solve for x
    x = 95,848,519.42/10,869.44
  6. Step 6: Final answer
    x = 8,818.17

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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.