Home / 30,165.72-45,248.64-9,111.79

Finding the Fourth Proportional to 30,165.72, 45,248.64 and 9,111.79

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Solution

The fourth proportional to 30,165.72, 45,248.64 and 9,111.79 is: 13,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,165.72 : 45,248.64 = 9,111.79 : x
  2. Step 2: Convert to fraction form
    30,165.72/45,248.64 = 9,111.79/x
  3. Step 3: Cross multiply
    30,165.72x = 45,248.64 × 9,111.79
  4. Step 4: Simplify right side
    30,165.72x = 412,296,105.47
  5. Step 5: Solve for x
    x = 412,296,105.47/30,165.72
  6. Step 6: Final answer
    x = 13,667.70

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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.