Home / 15,680.27-21,638.34-8,606.69

Finding the Fourth Proportional to 15,680.27, 21,638.34 and 8,606.69

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Solution

The fourth proportional to 15,680.27, 21,638.34 and 8,606.69 is: 11,877.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.27 : 21,638.34 = 8,606.69 : x
  2. Step 2: Convert to fraction form
    15,680.27/21,638.34 = 8,606.69/x
  3. Step 3: Cross multiply
    15,680.27x = 21,638.34 × 8,606.69
  4. Step 4: Simplify right side
    15,680.27x = 186,234,457.45
  5. Step 5: Solve for x
    x = 186,234,457.45/15,680.27
  6. Step 6: Final answer
    x = 11,877.00

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Half scale
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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.