Home / 28,066.19-38,731.37-15,490.94

Finding the Fourth Proportional to 28,066.19, 38,731.37 and 15,490.94

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Solution

The fourth proportional to 28,066.19, 38,731.37 and 15,490.94 is: 21,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.19 : 38,731.37 = 15,490.94 : x
  2. Step 2: Convert to fraction form
    28,066.19/38,731.37 = 15,490.94/x
  3. Step 3: Cross multiply
    28,066.19x = 38,731.37 × 15,490.94
  4. Step 4: Simplify right side
    28,066.19x = 599,985,057.68
  5. Step 5: Solve for x
    x = 599,985,057.68/28,066.19
  6. Step 6: Final answer
    x = 21,377.51

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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.