Home / 15,354.03-21,188.97-8,639.89

Finding the Fourth Proportional to 15,354.03, 21,188.97 and 8,639.89

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Solution

The fourth proportional to 15,354.03, 21,188.97 and 8,639.89 is: 11,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,354.03 : 21,188.97 = 8,639.89 : x
  2. Step 2: Convert to fraction form
    15,354.03/21,188.97 = 8,639.89/x
  3. Step 3: Cross multiply
    15,354.03x = 21,188.97 × 8,639.89
  4. Step 4: Simplify right side
    15,354.03x = 183,070,370.01
  5. Step 5: Solve for x
    x = 183,070,370.01/15,354.03
  6. Step 6: Final answer
    x = 11,923.28

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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.