Home / 15,920.38-21,950.40-10,603.54

Finding the Fourth Proportional to 15,920.38, 21,950.40 and 10,603.54

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Solution

The fourth proportional to 15,920.38, 21,950.40 and 10,603.54 is: 14,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.38 : 21,950.40 = 10,603.54 : x
  2. Step 2: Convert to fraction form
    15,920.38/21,950.40 = 10,603.54/x
  3. Step 3: Cross multiply
    15,920.38x = 21,950.40 × 10,603.54
  4. Step 4: Simplify right side
    15,920.38x = 232,751,944.42
  5. Step 5: Solve for x
    x = 232,751,944.42/15,920.38
  6. Step 6: Final answer
    x = 14,619.75

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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.