Home / 15,678.03-21,636.05-8,964.28

Finding the Fourth Proportional to 15,678.03, 21,636.05 and 8,964.28

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Solution

The fourth proportional to 15,678.03, 21,636.05 and 8,964.28 is: 12,370.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.03 : 21,636.05 = 8,964.28 : x
  2. Step 2: Convert to fraction form
    15,678.03/21,636.05 = 8,964.28/x
  3. Step 3: Cross multiply
    15,678.03x = 21,636.05 × 8,964.28
  4. Step 4: Simplify right side
    15,678.03x = 193,951,610.29
  5. Step 5: Solve for x
    x = 193,951,610.29/15,678.03
  6. Step 6: Final answer
    x = 12,370.92

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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.