Home / 20,410.87-28,165.08-11,456.63

Finding the Fourth Proportional to 20,410.87, 28,165.08 and 11,456.63

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Solution

The fourth proportional to 20,410.87, 28,165.08 and 11,456.63 is: 15,809.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.87 : 28,165.08 = 11,456.63 : x
  2. Step 2: Convert to fraction form
    20,410.87/28,165.08 = 11,456.63/x
  3. Step 3: Cross multiply
    20,410.87x = 28,165.08 × 11,456.63
  4. Step 4: Simplify right side
    20,410.87x = 322,676,900.48
  5. Step 5: Solve for x
    x = 322,676,900.48/20,410.87
  6. Step 6: Final answer
    x = 15,809.07

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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.