Home / 27,577.88-38,057.79-20,666.82

Finding the Fourth Proportional to 27,577.88, 38,057.79 and 20,666.82

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Solution

The fourth proportional to 27,577.88, 38,057.79 and 20,666.82 is: 28,520.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,577.88 : 38,057.79 = 20,666.82 : x
  2. Step 2: Convert to fraction form
    27,577.88/38,057.79 = 20,666.82/x
  3. Step 3: Cross multiply
    27,577.88x = 38,057.79 × 20,666.82
  4. Step 4: Simplify right side
    27,577.88x = 786,533,495.53
  5. Step 5: Solve for x
    x = 786,533,495.53/27,577.88
  6. Step 6: Final answer
    x = 28,520.45

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Double scale
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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.