Home / 20,287.02-27,981.26-13,560.82

Finding the Fourth Proportional to 20,287.02, 27,981.26 and 13,560.82

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Solution

The fourth proportional to 20,287.02, 27,981.26 and 13,560.82 is: 18,704.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.02 : 27,981.26 = 13,560.82 : x
  2. Step 2: Convert to fraction form
    20,287.02/27,981.26 = 13,560.82/x
  3. Step 3: Cross multiply
    20,287.02x = 27,981.26 × 13,560.82
  4. Step 4: Simplify right side
    20,287.02x = 379,448,830.23
  5. Step 5: Solve for x
    x = 379,448,830.23/20,287.02
  6. Step 6: Final answer
    x = 18,704.02

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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.