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Finding the Fourth Proportional to 18,988.84, 28,500.76 and 9,635.42

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Solution

The fourth proportional to 18,988.84, 28,500.76 and 9,635.42 is: 14,462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.84 : 28,500.76 = 9,635.42 : x
  2. Step 2: Convert to fraction form
    18,988.84/28,500.76 = 9,635.42/x
  3. Step 3: Cross multiply
    18,988.84x = 28,500.76 × 9,635.42
  4. Step 4: Simplify right side
    18,988.84x = 274,616,792.92
  5. Step 5: Solve for x
    x = 274,616,792.92/18,988.84
  6. Step 6: Final answer
    x = 14,462.01

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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.