Home / 28,119.06-42,177.76-7,342.56

Finding the Fourth Proportional to 28,119.06, 42,177.76 and 7,342.56

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Solution

The fourth proportional to 28,119.06, 42,177.76 and 7,342.56 is: 11,013.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.06 : 42,177.76 = 7,342.56 : x
  2. Step 2: Convert to fraction form
    28,119.06/42,177.76 = 7,342.56/x
  3. Step 3: Cross multiply
    28,119.06x = 42,177.76 × 7,342.56
  4. Step 4: Simplify right side
    28,119.06x = 309,692,733.47
  5. Step 5: Solve for x
    x = 309,692,733.47/28,119.06
  6. Step 6: Final answer
    x = 11,013.62

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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.