Home / 28,892.49-39,856.86-18,837.78

Finding the Fourth Proportional to 28,892.49, 39,856.86 and 18,837.78

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Solution

The fourth proportional to 28,892.49, 39,856.86 and 18,837.78 is: 25,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,892.49 : 39,856.86 = 18,837.78 : x
  2. Step 2: Convert to fraction form
    28,892.49/39,856.86 = 18,837.78/x
  3. Step 3: Cross multiply
    28,892.49x = 39,856.86 × 18,837.78
  4. Step 4: Simplify right side
    28,892.49x = 750,814,760.17
  5. Step 5: Solve for x
    x = 750,814,760.17/28,892.49
  6. Step 6: Final answer
    x = 25,986.50

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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.