Home / 15,678.65-21,636.45-8,604.92

Finding the Fourth Proportional to 15,678.65, 21,636.45 and 8,604.92

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Solution

The fourth proportional to 15,678.65, 21,636.45 and 8,604.92 is: 11,874.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.65 : 21,636.45 = 8,604.92 : x
  2. Step 2: Convert to fraction form
    15,678.65/21,636.45 = 8,604.92/x
  3. Step 3: Cross multiply
    15,678.65x = 21,636.45 × 8,604.92
  4. Step 4: Simplify right side
    15,678.65x = 186,179,921.33
  5. Step 5: Solve for x
    x = 186,179,921.33/15,678.65
  6. Step 6: Final answer
    x = 11,874.74

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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.