Home / 15,206.76-20,990.34-9,625.32

Finding the Fourth Proportional to 15,206.76, 20,990.34 and 9,625.32

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Solution

The fourth proportional to 15,206.76, 20,990.34 and 9,625.32 is: 13,286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.76 : 20,990.34 = 9,625.32 : x
  2. Step 2: Convert to fraction form
    15,206.76/20,990.34 = 9,625.32/x
  3. Step 3: Cross multiply
    15,206.76x = 20,990.34 × 9,625.32
  4. Step 4: Simplify right side
    15,206.76x = 202,038,739.41
  5. Step 5: Solve for x
    x = 202,038,739.41/15,206.76
  6. Step 6: Final answer
    x = 13,286.11

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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.