Home / 19,930.58-27,505.45-10,978.08

Finding the Fourth Proportional to 19,930.58, 27,505.45 and 10,978.08

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Solution

The fourth proportional to 19,930.58, 27,505.45 and 10,978.08 is: 15,150.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.58 : 27,505.45 = 10,978.08 : x
  2. Step 2: Convert to fraction form
    19,930.58/27,505.45 = 10,978.08/x
  3. Step 3: Cross multiply
    19,930.58x = 27,505.45 × 10,978.08
  4. Step 4: Simplify right side
    19,930.58x = 301,957,030.54
  5. Step 5: Solve for x
    x = 301,957,030.54/19,930.58
  6. Step 6: Final answer
    x = 15,150.44

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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.