Home / 20,695.78-28,547.22-17,237.44

Finding the Fourth Proportional to 20,695.78, 28,547.22 and 17,237.44

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Solution

The fourth proportional to 20,695.78, 28,547.22 and 17,237.44 is: 23,776.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.78 : 28,547.22 = 17,237.44 : x
  2. Step 2: Convert to fraction form
    20,695.78/28,547.22 = 17,237.44/x
  3. Step 3: Cross multiply
    20,695.78x = 28,547.22 × 17,237.44
  4. Step 4: Simplify right side
    20,695.78x = 492,080,991.92
  5. Step 5: Solve for x
    x = 492,080,991.92/20,695.78
  6. Step 6: Final answer
    x = 23,776.88

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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.