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Finding the Fourth Proportional to 12,666.16, 18,989.52 and 7,737.04

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Solution

The fourth proportional to 12,666.16, 18,989.52 and 7,737.04 is: 11,599.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.16 : 18,989.52 = 7,737.04 : x
  2. Step 2: Convert to fraction form
    12,666.16/18,989.52 = 7,737.04/x
  3. Step 3: Cross multiply
    12,666.16x = 18,989.52 × 7,737.04
  4. Step 4: Simplify right side
    12,666.16x = 146,922,675.82
  5. Step 5: Solve for x
    x = 146,922,675.82/12,666.16
  6. Step 6: Final answer
    x = 11,599.62

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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.