Home / 30,212.08-45,345.78-15,431.36

Finding the Fourth Proportional to 30,212.08, 45,345.78 and 15,431.36

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Solution

The fourth proportional to 30,212.08, 45,345.78 and 15,431.36 is: 23,161.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.08 : 45,345.78 = 15,431.36 : x
  2. Step 2: Convert to fraction form
    30,212.08/45,345.78 = 15,431.36/x
  3. Step 3: Cross multiply
    30,212.08x = 45,345.78 × 15,431.36
  4. Step 4: Simplify right side
    30,212.08x = 699,746,828.93
  5. Step 5: Solve for x
    x = 699,746,828.93/30,212.08
  6. Step 6: Final answer
    x = 23,161.16

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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.