Home / 21,752.91-30,011.79-15,036.12

Finding the Fourth Proportional to 21,752.91, 30,011.79 and 15,036.12

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Solution

The fourth proportional to 21,752.91, 30,011.79 and 15,036.12 is: 20,744.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.91 : 30,011.79 = 15,036.12 : x
  2. Step 2: Convert to fraction form
    21,752.91/30,011.79 = 15,036.12/x
  3. Step 3: Cross multiply
    21,752.91x = 30,011.79 × 15,036.12
  4. Step 4: Simplify right side
    21,752.91x = 451,260,875.85
  5. Step 5: Solve for x
    x = 451,260,875.85/21,752.91
  6. Step 6: Final answer
    x = 20,744.85

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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.