Home / 30,665.92-45,960.40-13,115.12

Finding the Fourth Proportional to 30,665.92, 45,960.40 and 13,115.12

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Solution

The fourth proportional to 30,665.92, 45,960.40 and 13,115.12 is: 19,656.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,665.92 : 45,960.40 = 13,115.12 : x
  2. Step 2: Convert to fraction form
    30,665.92/45,960.40 = 13,115.12/x
  3. Step 3: Cross multiply
    30,665.92x = 45,960.40 × 13,115.12
  4. Step 4: Simplify right side
    30,665.92x = 602,776,161.25
  5. Step 5: Solve for x
    x = 602,776,161.25/30,665.92
  6. Step 6: Final answer
    x = 19,656.22

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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.