Home / 20,681.24-31,049.40-10,828.40

Finding the Fourth Proportional to 20,681.24, 31,049.40 and 10,828.40

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Solution

The fourth proportional to 20,681.24, 31,049.40 and 10,828.40 is: 16,257.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.24 : 31,049.40 = 10,828.40 : x
  2. Step 2: Convert to fraction form
    20,681.24/31,049.40 = 10,828.40/x
  3. Step 3: Cross multiply
    20,681.24x = 31,049.40 × 10,828.40
  4. Step 4: Simplify right side
    20,681.24x = 336,215,322.96
  5. Step 5: Solve for x
    x = 336,215,322.96/20,681.24
  6. Step 6: Final answer
    x = 16,257.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.