Home / 28,163.60-42,243.20-7,386.56

Finding the Fourth Proportional to 28,163.60, 42,243.20 and 7,386.56

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Solution

The fourth proportional to 28,163.60, 42,243.20 and 7,386.56 is: 11,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.60 : 42,243.20 = 7,386.56 : x
  2. Step 2: Convert to fraction form
    28,163.60/42,243.20 = 7,386.56/x
  3. Step 3: Cross multiply
    28,163.60x = 42,243.20 × 7,386.56
  4. Step 4: Simplify right side
    28,163.60x = 312,031,931.39
  5. Step 5: Solve for x
    x = 312,031,931.39/28,163.60
  6. Step 6: Final answer
    x = 11,079.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.