Home / 30,345.12-41,881.68-18,414.36

Finding the Fourth Proportional to 30,345.12, 41,881.68 and 18,414.36

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Solution

The fourth proportional to 30,345.12, 41,881.68 and 18,414.36 is: 25,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.12 : 41,881.68 = 18,414.36 : x
  2. Step 2: Convert to fraction form
    30,345.12/41,881.68 = 18,414.36/x
  3. Step 3: Cross multiply
    30,345.12x = 41,881.68 × 18,414.36
  4. Step 4: Simplify right side
    30,345.12x = 771,224,332.92
  5. Step 5: Solve for x
    x = 771,224,332.92/30,345.12
  6. Step 6: Final answer
    x = 25,415.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.