Home / 30,280.86-41,781.30-18,345.24

Finding the Fourth Proportional to 30,280.86, 41,781.30 and 18,345.24

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Solution

The fourth proportional to 30,280.86, 41,781.30 and 18,345.24 is: 25,312.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,280.86 : 41,781.30 = 18,345.24 : x
  2. Step 2: Convert to fraction form
    30,280.86/41,781.30 = 18,345.24/x
  3. Step 3: Cross multiply
    30,280.86x = 41,781.30 × 18,345.24
  4. Step 4: Simplify right side
    30,280.86x = 766,487,976.01
  5. Step 5: Solve for x
    x = 766,487,976.01/30,280.86
  6. Step 6: Final answer
    x = 25,312.62

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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.