Home / 20,427.71-30,640.95-5,637.51

Finding the Fourth Proportional to 20,427.71, 30,640.95 and 5,637.51

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Solution

The fourth proportional to 20,427.71, 30,640.95 and 5,637.51 is: 8,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.71 : 30,640.95 = 5,637.51 : x
  2. Step 2: Convert to fraction form
    20,427.71/30,640.95 = 5,637.51/x
  3. Step 3: Cross multiply
    20,427.71x = 30,640.95 × 5,637.51
  4. Step 4: Simplify right side
    20,427.71x = 172,738,662.03
  5. Step 5: Solve for x
    x = 172,738,662.03/20,427.71
  6. Step 6: Final answer
    x = 8,456.10

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1.5x scale

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.