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Finding the Fourth Proportional to 18,479.34, 25,498.70 and 10,412.65

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Solution

The fourth proportional to 18,479.34, 25,498.70 and 10,412.65 is: 14,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.34 : 25,498.70 = 10,412.65 : x
  2. Step 2: Convert to fraction form
    18,479.34/25,498.70 = 10,412.65/x
  3. Step 3: Cross multiply
    18,479.34x = 25,498.70 × 10,412.65
  4. Step 4: Simplify right side
    18,479.34x = 265,509,057.41
  5. Step 5: Solve for x
    x = 265,509,057.41/18,479.34
  6. Step 6: Final answer
    x = 14,367.89

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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.