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Finding the Fourth Proportional to 19,173.35, 28,754.35 and 8,637.28

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Solution

The fourth proportional to 19,173.35, 28,754.35 and 8,637.28 is: 12,953.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,173.35 : 28,754.35 = 8,637.28 : x
  2. Step 2: Convert to fraction form
    19,173.35/28,754.35 = 8,637.28/x
  3. Step 3: Cross multiply
    19,173.35x = 28,754.35 × 8,637.28
  4. Step 4: Simplify right side
    19,173.35x = 248,359,372.17
  5. Step 5: Solve for x
    x = 248,359,372.17/19,173.35
  6. Step 6: Final answer
    x = 12,953.36

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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.