Home / 30,152.09-45,221.78-19,446.38

Finding the Fourth Proportional to 30,152.09, 45,221.78 and 19,446.38

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Solution

The fourth proportional to 30,152.09, 45,221.78 and 19,446.38 is: 29,165.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,152.09 : 45,221.78 = 19,446.38 : x
  2. Step 2: Convert to fraction form
    30,152.09/45,221.78 = 19,446.38/x
  3. Step 3: Cross multiply
    30,152.09x = 45,221.78 × 19,446.38
  4. Step 4: Simplify right side
    30,152.09x = 879,399,594.82
  5. Step 5: Solve for x
    x = 879,399,594.82/30,152.09
  6. Step 6: Final answer
    x = 29,165.47

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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.