Home / 20,847.51-31,280.18-13,829.99

Finding the Fourth Proportional to 20,847.51, 31,280.18 and 13,829.99

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Solution

The fourth proportional to 20,847.51, 31,280.18 and 13,829.99 is: 20,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.51 : 31,280.18 = 13,829.99 : x
  2. Step 2: Convert to fraction form
    20,847.51/31,280.18 = 13,829.99/x
  3. Step 3: Cross multiply
    20,847.51x = 31,280.18 × 13,829.99
  4. Step 4: Simplify right side
    20,847.51x = 432,604,351.05
  5. Step 5: Solve for x
    x = 432,604,351.05/20,847.51
  6. Step 6: Final answer
    x = 20,750.89

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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.