Home / 39,815.68-54,944.64-21,666.16

Finding the Fourth Proportional to 39,815.68, 54,944.64 and 21,666.16

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Solution

The fourth proportional to 39,815.68, 54,944.64 and 21,666.16 is: 29,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.68 : 54,944.64 = 21,666.16 : x
  2. Step 2: Convert to fraction form
    39,815.68/54,944.64 = 21,666.16/x
  3. Step 3: Cross multiply
    39,815.68x = 54,944.64 × 21,666.16
  4. Step 4: Simplify right side
    39,815.68x = 1,190,439,361.38
  5. Step 5: Solve for x
    x = 1,190,439,361.38/39,815.68
  6. Step 6: Final answer
    x = 29,898.76

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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.