Home / 15,654.36-21,601.26-9,689.88

Finding the Fourth Proportional to 15,654.36, 21,601.26 and 9,689.88

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Solution

The fourth proportional to 15,654.36, 21,601.26 and 9,689.88 is: 13,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.36 : 21,601.26 = 9,689.88 : x
  2. Step 2: Convert to fraction form
    15,654.36/21,601.26 = 9,689.88/x
  3. Step 3: Cross multiply
    15,654.36x = 21,601.26 × 9,689.88
  4. Step 4: Simplify right side
    15,654.36x = 209,313,617.25
  5. Step 5: Solve for x
    x = 209,313,617.25/15,654.36
  6. Step 6: Final answer
    x = 13,370.95

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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.