Home / 21,054.45-31,581.71-5,472.08

Finding the Fourth Proportional to 21,054.45, 31,581.71 and 5,472.08

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Solution

The fourth proportional to 21,054.45, 31,581.71 and 5,472.08 is: 8,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.45 : 31,581.71 = 5,472.08 : x
  2. Step 2: Convert to fraction form
    21,054.45/31,581.71 = 5,472.08/x
  3. Step 3: Cross multiply
    21,054.45x = 31,581.71 × 5,472.08
  4. Step 4: Simplify right side
    21,054.45x = 172,817,643.66
  5. Step 5: Solve for x
    x = 172,817,643.66/21,054.45
  6. Step 6: Final answer
    x = 8,208.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.