Home / 15,088.12-20,835.62-9,719.90

Finding the Fourth Proportional to 15,088.12, 20,835.62 and 9,719.90

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Solution

The fourth proportional to 15,088.12, 20,835.62 and 9,719.90 is: 13,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.12 : 20,835.62 = 9,719.90 : x
  2. Step 2: Convert to fraction form
    15,088.12/20,835.62 = 9,719.90/x
  3. Step 3: Cross multiply
    15,088.12x = 20,835.62 × 9,719.90
  4. Step 4: Simplify right side
    15,088.12x = 202,520,142.84
  5. Step 5: Solve for x
    x = 202,520,142.84/15,088.12
  6. Step 6: Final answer
    x = 13,422.49

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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.