Home / 30,345.52-41,864.48-18,388.12

Finding the Fourth Proportional to 30,345.52, 41,864.48 and 18,388.12

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Solution

The fourth proportional to 30,345.52, 41,864.48 and 18,388.12 is: 25,368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.52 : 41,864.48 = 18,388.12 : x
  2. Step 2: Convert to fraction form
    30,345.52/41,864.48 = 18,388.12/x
  3. Step 3: Cross multiply
    30,345.52x = 41,864.48 × 18,388.12
  4. Step 4: Simplify right side
    30,345.52x = 769,809,081.98
  5. Step 5: Solve for x
    x = 769,809,081.98/30,345.52
  6. Step 6: Final answer
    x = 25,368.13

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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.