Home / 15,165.77-20,939.44-10,638.08

Finding the Fourth Proportional to 15,165.77, 20,939.44 and 10,638.08

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Solution

The fourth proportional to 15,165.77, 20,939.44 and 10,638.08 is: 14,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.77 : 20,939.44 = 10,638.08 : x
  2. Step 2: Convert to fraction form
    15,165.77/20,939.44 = 10,638.08/x
  3. Step 3: Cross multiply
    15,165.77x = 20,939.44 × 10,638.08
  4. Step 4: Simplify right side
    15,165.77x = 222,755,306.58
  5. Step 5: Solve for x
    x = 222,755,306.58/15,165.77
  6. Step 6: Final answer
    x = 14,688.03

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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.