Home / 15,270.90-21,072.85-8,982.06

Finding the Fourth Proportional to 15,270.90, 21,072.85 and 8,982.06

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Solution

The fourth proportional to 15,270.90, 21,072.85 and 8,982.06 is: 12,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.90 : 21,072.85 = 8,982.06 : x
  2. Step 2: Convert to fraction form
    15,270.90/21,072.85 = 8,982.06/x
  3. Step 3: Cross multiply
    15,270.90x = 21,072.85 × 8,982.06
  4. Step 4: Simplify right side
    15,270.90x = 189,277,603.07
  5. Step 5: Solve for x
    x = 189,277,603.07/15,270.90
  6. Step 6: Final answer
    x = 12,394.66

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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.