Home / 19,930.05-27,503.49-10,977.57

Finding the Fourth Proportional to 19,930.05, 27,503.49 and 10,977.57

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Solution

The fourth proportional to 19,930.05, 27,503.49 and 10,977.57 is: 15,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.05 : 27,503.49 = 10,977.57 : x
  2. Step 2: Convert to fraction form
    19,930.05/27,503.49 = 10,977.57/x
  3. Step 3: Cross multiply
    19,930.05x = 27,503.49 × 10,977.57
  4. Step 4: Simplify right side
    19,930.05x = 301,921,631.02
  5. Step 5: Solve for x
    x = 301,921,631.02/19,930.05
  6. Step 6: Final answer
    x = 15,149.07

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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.