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Finding the Fourth Proportional to 36,642.40, 54,967.98 and 12,945.04

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Solution

The fourth proportional to 36,642.40, 54,967.98 and 12,945.04 is: 19,419.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,642.40 : 54,967.98 = 12,945.04 : x
  2. Step 2: Convert to fraction form
    36,642.40/54,967.98 = 12,945.04/x
  3. Step 3: Cross multiply
    36,642.40x = 54,967.98 × 12,945.04
  4. Step 4: Simplify right side
    36,642.40x = 711,562,699.82
  5. Step 5: Solve for x
    x = 711,562,699.82/36,642.40
  6. Step 6: Final answer
    x = 19,419.11

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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.