Home / 28,289.18-42,438.96-9,314.90

Finding the Fourth Proportional to 28,289.18, 42,438.96 and 9,314.90

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Solution

The fourth proportional to 28,289.18, 42,438.96 and 9,314.90 is: 13,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.18 : 42,438.96 = 9,314.90 : x
  2. Step 2: Convert to fraction form
    28,289.18/42,438.96 = 9,314.90/x
  3. Step 3: Cross multiply
    28,289.18x = 42,438.96 × 9,314.90
  4. Step 4: Simplify right side
    28,289.18x = 395,314,456.31
  5. Step 5: Solve for x
    x = 395,314,456.31/28,289.18
  6. Step 6: Final answer
    x = 13,974.05

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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.