Home / 40,520.16-60,782.40-12,816

Finding the Fourth Proportional to 40,520.16, 60,782.40 and 12,816

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Solution

The fourth proportional to 40,520.16, 60,782.40 and 12,816 is: 19,224.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,520.16 : 60,782.40 = 12,816 : x
  2. Step 2: Convert to fraction form
    40,520.16/60,782.40 = 12,816/x
  3. Step 3: Cross multiply
    40,520.16x = 60,782.40 × 12,816
  4. Step 4: Simplify right side
    40,520.16x = 778,987,238.40
  5. Step 5: Solve for x
    x = 778,987,238.40/40,520.16
  6. Step 6: Final answer
    x = 19,224.68

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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.