Home / 28,267.48-42,400.84-6,920.40

Finding the Fourth Proportional to 28,267.48, 42,400.84 and 6,920.40

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Solution

The fourth proportional to 28,267.48, 42,400.84 and 6,920.40 is: 10,380.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,267.48 : 42,400.84 = 6,920.40 : x
  2. Step 2: Convert to fraction form
    28,267.48/42,400.84 = 6,920.40/x
  3. Step 3: Cross multiply
    28,267.48x = 42,400.84 × 6,920.40
  4. Step 4: Simplify right side
    28,267.48x = 293,430,773.14
  5. Step 5: Solve for x
    x = 293,430,773.14/28,267.48
  6. Step 6: Final answer
    x = 10,380.51

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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.