Home / 20,312.14-30,459.50-6,986.48

Finding the Fourth Proportional to 20,312.14, 30,459.50 and 6,986.48

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Solution

The fourth proportional to 20,312.14, 30,459.50 and 6,986.48 is: 10,476.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.14 : 30,459.50 = 6,986.48 : x
  2. Step 2: Convert to fraction form
    20,312.14/30,459.50 = 6,986.48/x
  3. Step 3: Cross multiply
    20,312.14x = 30,459.50 × 6,986.48
  4. Step 4: Simplify right side
    20,312.14x = 212,804,687.56
  5. Step 5: Solve for x
    x = 212,804,687.56/20,312.14
  6. Step 6: Final answer
    x = 10,476.72

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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.