Home / 35,518.78-53,278.17-12,145.42

Finding the Fourth Proportional to 35,518.78, 53,278.17 and 12,145.42

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Solution

The fourth proportional to 35,518.78, 53,278.17 and 12,145.42 is: 18,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,518.78 : 53,278.17 = 12,145.42 : x
  2. Step 2: Convert to fraction form
    35,518.78/53,278.17 = 12,145.42/x
  3. Step 3: Cross multiply
    35,518.78x = 53,278.17 × 12,145.42
  4. Step 4: Simplify right side
    35,518.78x = 647,085,751.48
  5. Step 5: Solve for x
    x = 647,085,751.48/35,518.78
  6. Step 6: Final answer
    x = 18,218.13

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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.