Home / 12,330.98-18,502.55-7,649.79

Finding the Fourth Proportional to 12,330.98, 18,502.55 and 7,649.79

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Solution

The fourth proportional to 12,330.98, 18,502.55 and 7,649.79 is: 11,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.98 : 18,502.55 = 7,649.79 : x
  2. Step 2: Convert to fraction form
    12,330.98/18,502.55 = 7,649.79/x
  3. Step 3: Cross multiply
    12,330.98x = 18,502.55 × 7,649.79
  4. Step 4: Simplify right side
    12,330.98x = 141,540,583.72
  5. Step 5: Solve for x
    x = 141,540,583.72/12,330.98
  6. Step 6: Final answer
    x = 11,478.45

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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.