Home / 11,428.36-15,770.10-7,236.52

Finding the Fourth Proportional to 11,428.36, 15,770.10 and 7,236.52

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Solution

The fourth proportional to 11,428.36, 15,770.10 and 7,236.52 is: 9,985.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.36 : 15,770.10 = 7,236.52 : x
  2. Step 2: Convert to fraction form
    11,428.36/15,770.10 = 7,236.52/x
  3. Step 3: Cross multiply
    11,428.36x = 15,770.10 × 7,236.52
  4. Step 4: Simplify right side
    11,428.36x = 114,120,644.05
  5. Step 5: Solve for x
    x = 114,120,644.05/11,428.36
  6. Step 6: Final answer
    x = 9,985.74

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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.