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Finding the Fourth Proportional to 18,754.03, 28,130.28 and 4,714.15

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Solution

The fourth proportional to 18,754.03, 28,130.28 and 4,714.15 is: 7,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.03 : 28,130.28 = 4,714.15 : x
  2. Step 2: Convert to fraction form
    18,754.03/28,130.28 = 4,714.15/x
  3. Step 3: Cross multiply
    18,754.03x = 28,130.28 × 4,714.15
  4. Step 4: Simplify right side
    18,754.03x = 132,610,359.46
  5. Step 5: Solve for x
    x = 132,610,359.46/18,754.03
  6. Step 6: Final answer
    x = 7,071.03

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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.