Home / 28,639.11-42,948.36-9,914.07

Finding the Fourth Proportional to 28,639.11, 42,948.36 and 9,914.07

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Solution

The fourth proportional to 28,639.11, 42,948.36 and 9,914.07 is: 14,867.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.11 : 42,948.36 = 9,914.07 : x
  2. Step 2: Convert to fraction form
    28,639.11/42,948.36 = 9,914.07/x
  3. Step 3: Cross multiply
    28,639.11x = 42,948.36 × 9,914.07
  4. Step 4: Simplify right side
    28,639.11x = 425,793,047.43
  5. Step 5: Solve for x
    x = 425,793,047.43/28,639.11
  6. Step 6: Final answer
    x = 14,867.54

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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.