Home / 11,931.72-16,470.45-8,706.30

Finding the Fourth Proportional to 11,931.72, 16,470.45 and 8,706.30

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Solution

The fourth proportional to 11,931.72, 16,470.45 and 8,706.30 is: 12,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.72 : 16,470.45 = 8,706.30 : x
  2. Step 2: Convert to fraction form
    11,931.72/16,470.45 = 8,706.30/x
  3. Step 3: Cross multiply
    11,931.72x = 16,470.45 × 8,706.30
  4. Step 4: Simplify right side
    11,931.72x = 143,396,678.84
  5. Step 5: Solve for x
    x = 143,396,678.84/11,931.72
  6. Step 6: Final answer
    x = 12,018.11

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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.