Home / 26,280.96-39,418.88-7,813.12

Finding the Fourth Proportional to 26,280.96, 39,418.88 and 7,813.12

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Solution

The fourth proportional to 26,280.96, 39,418.88 and 7,813.12 is: 11,718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,280.96 : 39,418.88 = 7,813.12 : x
  2. Step 2: Convert to fraction form
    26,280.96/39,418.88 = 7,813.12/x
  3. Step 3: Cross multiply
    26,280.96x = 39,418.88 × 7,813.12
  4. Step 4: Simplify right side
    26,280.96x = 307,984,439.71
  5. Step 5: Solve for x
    x = 307,984,439.71/26,280.96
  6. Step 6: Final answer
    x = 11,718.92

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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.