Home / 14,778.46-20,394.75-8,490.70

Finding the Fourth Proportional to 14,778.46, 20,394.75 and 8,490.70

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Solution

The fourth proportional to 14,778.46, 20,394.75 and 8,490.70 is: 11,717.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.46 : 20,394.75 = 8,490.70 : x
  2. Step 2: Convert to fraction form
    14,778.46/20,394.75 = 8,490.70/x
  3. Step 3: Cross multiply
    14,778.46x = 20,394.75 × 8,490.70
  4. Step 4: Simplify right side
    14,778.46x = 173,165,703.83
  5. Step 5: Solve for x
    x = 173,165,703.83/14,778.46
  6. Step 6: Final answer
    x = 11,717.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.