Home / 15,326.91-21,153.09-9,357.30

Finding the Fourth Proportional to 15,326.91, 21,153.09 and 9,357.30

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Solution

The fourth proportional to 15,326.91, 21,153.09 and 9,357.30 is: 12,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.91 : 21,153.09 = 9,357.30 : x
  2. Step 2: Convert to fraction form
    15,326.91/21,153.09 = 9,357.30/x
  3. Step 3: Cross multiply
    15,326.91x = 21,153.09 × 9,357.30
  4. Step 4: Simplify right side
    15,326.91x = 197,935,809.06
  5. Step 5: Solve for x
    x = 197,935,809.06/15,326.91
  6. Step 6: Final answer
    x = 12,914.27

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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.