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Finding the Fourth Proportional to 12,330.80, 18,496.20 and 7,060.40

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Solution

The fourth proportional to 12,330.80, 18,496.20 and 7,060.40 is: 10,590.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.80 : 18,496.20 = 7,060.40 : x
  2. Step 2: Convert to fraction form
    12,330.80/18,496.20 = 7,060.40/x
  3. Step 3: Cross multiply
    12,330.80x = 18,496.20 × 7,060.40
  4. Step 4: Simplify right side
    12,330.80x = 130,590,570.48
  5. Step 5: Solve for x
    x = 130,590,570.48/12,330.80
  6. Step 6: Final answer
    x = 10,590.60

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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.