Home / 27,889.92-38,488.56-15,315.84

Finding the Fourth Proportional to 27,889.92, 38,488.56 and 15,315.84

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Solution

The fourth proportional to 27,889.92, 38,488.56 and 15,315.84 is: 21,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,889.92 : 38,488.56 = 15,315.84 : x
  2. Step 2: Convert to fraction form
    27,889.92/38,488.56 = 15,315.84/x
  3. Step 3: Cross multiply
    27,889.92x = 38,488.56 × 15,315.84
  4. Step 4: Simplify right side
    27,889.92x = 589,484,626.79
  5. Step 5: Solve for x
    x = 589,484,626.79/27,889.92
  6. Step 6: Final answer
    x = 21,136.12

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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.