Home / 8,740.30-13,043.26-8,690.38

Finding the Fourth Proportional to 8,740.30, 13,043.26 and 8,690.38

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Solution

The fourth proportional to 8,740.30, 13,043.26 and 8,690.38 is: 12,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.30 : 13,043.26 = 8,690.38 : x
  2. Step 2: Convert to fraction form
    8,740.30/13,043.26 = 8,690.38/x
  3. Step 3: Cross multiply
    8,740.30x = 13,043.26 × 8,690.38
  4. Step 4: Simplify right side
    8,740.30x = 113,350,909.96
  5. Step 5: Solve for x
    x = 113,350,909.96/8,740.30
  6. Step 6: Final answer
    x = 12,968.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.