Home / 20,710.42-31,065.93-7,564.12

Finding the Fourth Proportional to 20,710.42, 31,065.93 and 7,564.12

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Solution

The fourth proportional to 20,710.42, 31,065.93 and 7,564.12 is: 11,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.42 : 31,065.93 = 7,564.12 : x
  2. Step 2: Convert to fraction form
    20,710.42/31,065.93 = 7,564.12/x
  3. Step 3: Cross multiply
    20,710.42x = 31,065.93 × 7,564.12
  4. Step 4: Simplify right side
    20,710.42x = 234,986,344.77
  5. Step 5: Solve for x
    x = 234,986,344.77/20,710.42
  6. Step 6: Final answer
    x = 11,346.29

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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.