Home / 21,751.38-30,015.90-12,320.02

Finding the Fourth Proportional to 21,751.38, 30,015.90 and 12,320.02

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Solution

The fourth proportional to 21,751.38, 30,015.90 and 12,320.02 is: 17,001.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.38 : 30,015.90 = 12,320.02 : x
  2. Step 2: Convert to fraction form
    21,751.38/30,015.90 = 12,320.02/x
  3. Step 3: Cross multiply
    21,751.38x = 30,015.90 × 12,320.02
  4. Step 4: Simplify right side
    21,751.38x = 369,796,488.32
  5. Step 5: Solve for x
    x = 369,796,488.32/21,751.38
  6. Step 6: Final answer
    x = 17,001.06

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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.