Home / 15,680.18-21,639-8,606.58

Finding the Fourth Proportional to 15,680.18, 21,639 and 8,606.58

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Solution

The fourth proportional to 15,680.18, 21,639 and 8,606.58 is: 11,877.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.18 : 21,639 = 8,606.58 : x
  2. Step 2: Convert to fraction form
    15,680.18/21,639 = 8,606.58/x
  3. Step 3: Cross multiply
    15,680.18x = 21,639 × 8,606.58
  4. Step 4: Simplify right side
    15,680.18x = 186,237,784.62
  5. Step 5: Solve for x
    x = 186,237,784.62/15,680.18
  6. Step 6: Final answer
    x = 11,877.27

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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.