Home / 27,920.25-38,529.95-15,345

Finding the Fourth Proportional to 27,920.25, 38,529.95 and 15,345

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Solution

The fourth proportional to 27,920.25, 38,529.95 and 15,345 is: 21,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.25 : 38,529.95 = 15,345 : x
  2. Step 2: Convert to fraction form
    27,920.25/38,529.95 = 15,345/x
  3. Step 3: Cross multiply
    27,920.25x = 38,529.95 × 15,345
  4. Step 4: Simplify right side
    27,920.25x = 591,242,006.03
  5. Step 5: Solve for x
    x = 591,242,006.03/27,920.25
  6. Step 6: Final answer
    x = 21,176.10

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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.