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Finding the Fourth Proportional to 18,964.03, 28,437.77 and 10,077.22

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Solution

The fourth proportional to 18,964.03, 28,437.77 and 10,077.22 is: 15,111.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.03 : 28,437.77 = 10,077.22 : x
  2. Step 2: Convert to fraction form
    18,964.03/28,437.77 = 10,077.22/x
  3. Step 3: Cross multiply
    18,964.03x = 28,437.77 × 10,077.22
  4. Step 4: Simplify right side
    18,964.03x = 286,573,508.69
  5. Step 5: Solve for x
    x = 286,573,508.69/18,964.03
  6. Step 6: Final answer
    x = 15,111.43

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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.