Home / 11,222.40-15,487.68-7,439.01

Finding the Fourth Proportional to 11,222.40, 15,487.68 and 7,439.01

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Solution

The fourth proportional to 11,222.40, 15,487.68 and 7,439.01 is: 10,266.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,222.40 : 15,487.68 = 7,439.01 : x
  2. Step 2: Convert to fraction form
    11,222.40/15,487.68 = 7,439.01/x
  3. Step 3: Cross multiply
    11,222.40x = 15,487.68 × 7,439.01
  4. Step 4: Simplify right side
    11,222.40x = 115,213,006.40
  5. Step 5: Solve for x
    x = 115,213,006.40/11,222.40
  6. Step 6: Final answer
    x = 10,266.34

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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.