Home / 15,680.55-21,638.72-8,606.97

Finding the Fourth Proportional to 15,680.55, 21,638.72 and 8,606.97

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Solution

The fourth proportional to 15,680.55, 21,638.72 and 8,606.97 is: 11,877.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.55 : 21,638.72 = 8,606.97 : x
  2. Step 2: Convert to fraction form
    15,680.55/21,638.72 = 8,606.97/x
  3. Step 3: Cross multiply
    15,680.55x = 21,638.72 × 8,606.97
  4. Step 4: Simplify right side
    15,680.55x = 186,243,835.40
  5. Step 5: Solve for x
    x = 186,243,835.40/15,680.55
  6. Step 6: Final answer
    x = 11,877.38

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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.