Home / 20,852.34-31,285.86-13,860.12

Finding the Fourth Proportional to 20,852.34, 31,285.86 and 13,860.12

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Solution

The fourth proportional to 20,852.34, 31,285.86 and 13,860.12 is: 20,795.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.34 : 31,285.86 = 13,860.12 : x
  2. Step 2: Convert to fraction form
    20,852.34/31,285.86 = 13,860.12/x
  3. Step 3: Cross multiply
    20,852.34x = 31,285.86 × 13,860.12
  4. Step 4: Simplify right side
    20,852.34x = 433,625,773.90
  5. Step 5: Solve for x
    x = 433,625,773.90/20,852.34
  6. Step 6: Final answer
    x = 20,795.07

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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.