Home / 20,320.57-28,036.98-13,949.11

Finding the Fourth Proportional to 20,320.57, 28,036.98 and 13,949.11

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Solution

The fourth proportional to 20,320.57, 28,036.98 and 13,949.11 is: 19,246.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.57 : 28,036.98 = 13,949.11 : x
  2. Step 2: Convert to fraction form
    20,320.57/28,036.98 = 13,949.11/x
  3. Step 3: Cross multiply
    20,320.57x = 28,036.98 × 13,949.11
  4. Step 4: Simplify right side
    20,320.57x = 391,090,848.00
  5. Step 5: Solve for x
    x = 391,090,848.00/20,320.57
  6. Step 6: Final answer
    x = 19,246.06

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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.