Home / 27,898.04-38,499.28-15,322.78

Finding the Fourth Proportional to 27,898.04, 38,499.28 and 15,322.78

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Solution

The fourth proportional to 27,898.04, 38,499.28 and 15,322.78 is: 21,145.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,898.04 : 38,499.28 = 15,322.78 : x
  2. Step 2: Convert to fraction form
    27,898.04/38,499.28 = 15,322.78/x
  3. Step 3: Cross multiply
    27,898.04x = 38,499.28 × 15,322.78
  4. Step 4: Simplify right side
    27,898.04x = 589,915,997.60
  5. Step 5: Solve for x
    x = 589,915,997.60/27,898.04
  6. Step 6: Final answer
    x = 21,145.43

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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.