Home / 27,890.49-38,488.84-15,315.24

Finding the Fourth Proportional to 27,890.49, 38,488.84 and 15,315.24

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Solution

The fourth proportional to 27,890.49, 38,488.84 and 15,315.24 is: 21,135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.49 : 38,488.84 = 15,315.24 : x
  2. Step 2: Convert to fraction form
    27,890.49/38,488.84 = 15,315.24/x
  3. Step 3: Cross multiply
    27,890.49x = 38,488.84 × 15,315.24
  4. Step 4: Simplify right side
    27,890.49x = 589,465,797.62
  5. Step 5: Solve for x
    x = 589,465,797.62/27,890.49
  6. Step 6: Final answer
    x = 21,135.01

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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.