Home / 20,866.14-31,282.77-10,328.79

Finding the Fourth Proportional to 20,866.14, 31,282.77 and 10,328.79

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Solution

The fourth proportional to 20,866.14, 31,282.77 and 10,328.79 is: 15,485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.14 : 31,282.77 = 10,328.79 : x
  2. Step 2: Convert to fraction form
    20,866.14/31,282.77 = 10,328.79/x
  3. Step 3: Cross multiply
    20,866.14x = 31,282.77 × 10,328.79
  4. Step 4: Simplify right side
    20,866.14x = 323,113,161.95
  5. Step 5: Solve for x
    x = 323,113,161.95/20,866.14
  6. Step 6: Final answer
    x = 15,485.05

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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.