Home / 36,309.12-54,430.72-12,930.08

Finding the Fourth Proportional to 36,309.12, 54,430.72 and 12,930.08

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Solution

The fourth proportional to 36,309.12, 54,430.72 and 12,930.08 is: 19,383.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,309.12 : 54,430.72 = 12,930.08 : x
  2. Step 2: Convert to fraction form
    36,309.12/54,430.72 = 12,930.08/x
  3. Step 3: Cross multiply
    36,309.12x = 54,430.72 × 12,930.08
  4. Step 4: Simplify right side
    36,309.12x = 703,793,564.06
  5. Step 5: Solve for x
    x = 703,793,564.06/36,309.12
  6. Step 6: Final answer
    x = 19,383.38

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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.