Home / 19,920.16-27,488.80-10,965.93

Finding the Fourth Proportional to 19,920.16, 27,488.80 and 10,965.93

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Solution

The fourth proportional to 19,920.16, 27,488.80 and 10,965.93 is: 15,132.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.16 : 27,488.80 = 10,965.93 : x
  2. Step 2: Convert to fraction form
    19,920.16/27,488.80 = 10,965.93/x
  3. Step 3: Cross multiply
    19,920.16x = 27,488.80 × 10,965.93
  4. Step 4: Simplify right side
    19,920.16x = 301,440,201.75
  5. Step 5: Solve for x
    x = 301,440,201.75/19,920.16
  6. Step 6: Final answer
    x = 15,132.42

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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.