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Finding the Fourth Proportional to 10,187.66, 14,063.88 and 6,412.65

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Solution

The fourth proportional to 10,187.66, 14,063.88 and 6,412.65 is: 8,852.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.66 : 14,063.88 = 6,412.65 : x
  2. Step 2: Convert to fraction form
    10,187.66/14,063.88 = 6,412.65/x
  3. Step 3: Cross multiply
    10,187.66x = 14,063.88 × 6,412.65
  4. Step 4: Simplify right side
    10,187.66x = 90,186,740.08
  5. Step 5: Solve for x
    x = 90,186,740.08/10,187.66
  6. Step 6: Final answer
    x = 8,852.55

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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.