Home / 12,665.68-18,972.60-7,455.76

Finding the Fourth Proportional to 12,665.68, 18,972.60 and 7,455.76

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Solution

The fourth proportional to 12,665.68, 18,972.60 and 7,455.76 is: 11,168.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.68 : 18,972.60 = 7,455.76 : x
  2. Step 2: Convert to fraction form
    12,665.68/18,972.60 = 7,455.76/x
  3. Step 3: Cross multiply
    12,665.68x = 18,972.60 × 7,455.76
  4. Step 4: Simplify right side
    12,665.68x = 141,455,152.18
  5. Step 5: Solve for x
    x = 141,455,152.18/12,665.68
  6. Step 6: Final answer
    x = 11,168.38

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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.