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Finding the Fourth Proportional to 19,073.84, 28,615.95 and 9,213.12

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Solution

The fourth proportional to 19,073.84, 28,615.95 and 9,213.12 is: 13,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,073.84 : 28,615.95 = 9,213.12 : x
  2. Step 2: Convert to fraction form
    19,073.84/28,615.95 = 9,213.12/x
  3. Step 3: Cross multiply
    19,073.84x = 28,615.95 × 9,213.12
  4. Step 4: Simplify right side
    19,073.84x = 263,642,181.26
  5. Step 5: Solve for x
    x = 263,642,181.26/19,073.84
  6. Step 6: Final answer
    x = 13,822.19

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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.