Home / 38,977.55-53,788.99-21,072.56

Finding the Fourth Proportional to 38,977.55, 53,788.99 and 21,072.56

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Solution

The fourth proportional to 38,977.55, 53,788.99 and 21,072.56 is: 29,080.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,977.55 : 53,788.99 = 21,072.56 : x
  2. Step 2: Convert to fraction form
    38,977.55/53,788.99 = 21,072.56/x
  3. Step 3: Cross multiply
    38,977.55x = 53,788.99 × 21,072.56
  4. Step 4: Simplify right side
    38,977.55x = 1,133,471,719.11
  5. Step 5: Solve for x
    x = 1,133,471,719.11/38,977.55
  6. Step 6: Final answer
    x = 29,080.12

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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.