Home / 27,889.75-38,488.13-15,314.77

Finding the Fourth Proportional to 27,889.75, 38,488.13 and 15,314.77

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Solution

The fourth proportional to 27,889.75, 38,488.13 and 15,314.77 is: 21,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,889.75 : 38,488.13 = 15,314.77 : x
  2. Step 2: Convert to fraction form
    27,889.75/38,488.13 = 15,314.77/x
  3. Step 3: Cross multiply
    27,889.75x = 38,488.13 × 15,314.77
  4. Step 4: Simplify right side
    27,889.75x = 589,436,782.11
  5. Step 5: Solve for x
    x = 589,436,782.11/27,889.75
  6. Step 6: Final answer
    x = 21,134.53

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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.