Home / 20,593.76-31,035.71-18,621.63

Finding the Fourth Proportional to 20,593.76, 31,035.71 and 18,621.63

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Solution

The fourth proportional to 20,593.76, 31,035.71 and 18,621.63 is: 28,063.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.76 : 31,035.71 = 18,621.63 : x
  2. Step 2: Convert to fraction form
    20,593.76/31,035.71 = 18,621.63/x
  3. Step 3: Cross multiply
    20,593.76x = 31,035.71 × 18,621.63
  4. Step 4: Simplify right side
    20,593.76x = 577,935,415.30
  5. Step 5: Solve for x
    x = 577,935,415.30/20,593.76
  6. Step 6: Final answer
    x = 28,063.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.