Home / 20,279.08-30,418.62-13,264.99

Finding the Fourth Proportional to 20,279.08, 30,418.62 and 13,264.99

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Solution

The fourth proportional to 20,279.08, 30,418.62 and 13,264.99 is: 19,897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.08 : 30,418.62 = 13,264.99 : x
  2. Step 2: Convert to fraction form
    20,279.08/30,418.62 = 13,264.99/x
  3. Step 3: Cross multiply
    20,279.08x = 30,418.62 × 13,264.99
  4. Step 4: Simplify right side
    20,279.08x = 403,502,690.11
  5. Step 5: Solve for x
    x = 403,502,690.11/20,279.08
  6. Step 6: Final answer
    x = 19,897.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.