Home / 27,801.78-38,366.91-15,225.72

Finding the Fourth Proportional to 27,801.78, 38,366.91 and 15,225.72

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Solution

The fourth proportional to 27,801.78, 38,366.91 and 15,225.72 is: 21,011.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,801.78 : 38,366.91 = 15,225.72 : x
  2. Step 2: Convert to fraction form
    27,801.78/38,366.91 = 15,225.72/x
  3. Step 3: Cross multiply
    27,801.78x = 38,366.91 × 15,225.72
  4. Step 4: Simplify right side
    27,801.78x = 584,163,828.93
  5. Step 5: Solve for x
    x = 584,163,828.93/27,801.78
  6. Step 6: Final answer
    x = 21,011.74

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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.