Home / 27,898.15-38,499.72-15,322.90

Finding the Fourth Proportional to 27,898.15, 38,499.72 and 15,322.90

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Solution

The fourth proportional to 27,898.15, 38,499.72 and 15,322.90 is: 21,145.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,898.15 : 38,499.72 = 15,322.90 : x
  2. Step 2: Convert to fraction form
    27,898.15/38,499.72 = 15,322.90/x
  3. Step 3: Cross multiply
    27,898.15x = 38,499.72 × 15,322.90
  4. Step 4: Simplify right side
    27,898.15x = 589,927,205.88
  5. Step 5: Solve for x
    x = 589,927,205.88/27,898.15
  6. Step 6: Final answer
    x = 21,145.75

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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.