Home / 25,214.76-34,782.66-15,781.32

Finding the Fourth Proportional to 25,214.76, 34,782.66 and 15,781.32

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Solution

The fourth proportional to 25,214.76, 34,782.66 and 15,781.32 is: 21,769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,214.76 : 34,782.66 = 15,781.32 : x
  2. Step 2: Convert to fraction form
    25,214.76/34,782.66 = 15,781.32/x
  3. Step 3: Cross multiply
    25,214.76x = 34,782.66 × 15,781.32
  4. Step 4: Simplify right side
    25,214.76x = 548,916,287.91
  5. Step 5: Solve for x
    x = 548,916,287.91/25,214.76
  6. Step 6: Final answer
    x = 21,769.64

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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.