Home / 28,384.44-39,132.36-19,875.12

Finding the Fourth Proportional to 28,384.44, 39,132.36 and 19,875.12

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Solution

The fourth proportional to 28,384.44, 39,132.36 and 19,875.12 is: 27,400.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.44 : 39,132.36 = 19,875.12 : x
  2. Step 2: Convert to fraction form
    28,384.44/39,132.36 = 19,875.12/x
  3. Step 3: Cross multiply
    28,384.44x = 39,132.36 × 19,875.12
  4. Step 4: Simplify right side
    28,384.44x = 777,760,350.88
  5. Step 5: Solve for x
    x = 777,760,350.88/28,384.44
  6. Step 6: Final answer
    x = 27,400.94

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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.