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Finding the Fourth Proportional to 12,330.99, 18,501.12 and 7,404.06

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Solution

The fourth proportional to 12,330.99, 18,501.12 and 7,404.06 is: 11,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.99 : 18,501.12 = 7,404.06 : x
  2. Step 2: Convert to fraction form
    12,330.99/18,501.12 = 7,404.06/x
  3. Step 3: Cross multiply
    12,330.99x = 18,501.12 × 7,404.06
  4. Step 4: Simplify right side
    12,330.99x = 136,983,402.55
  5. Step 5: Solve for x
    x = 136,983,402.55/12,330.99
  6. Step 6: Final answer
    x = 11,108.87

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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.