Home / 28,055.35-38,717.19-15,480.91

Finding the Fourth Proportional to 28,055.35, 38,717.19 and 15,480.91

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Solution

The fourth proportional to 28,055.35, 38,717.19 and 15,480.91 is: 21,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.35 : 38,717.19 = 15,480.91 : x
  2. Step 2: Convert to fraction form
    28,055.35/38,717.19 = 15,480.91/x
  3. Step 3: Cross multiply
    28,055.35x = 38,717.19 × 15,480.91
  4. Step 4: Simplify right side
    28,055.35x = 599,377,237.05
  5. Step 5: Solve for x
    x = 599,377,237.05/28,055.35
  6. Step 6: Final answer
    x = 21,364.10

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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.