Home / 20,666.51-28,469.16-14,984.56

Finding the Fourth Proportional to 20,666.51, 28,469.16 and 14,984.56

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Solution

The fourth proportional to 20,666.51, 28,469.16 and 14,984.56 is: 20,641.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.51 : 28,469.16 = 14,984.56 : x
  2. Step 2: Convert to fraction form
    20,666.51/28,469.16 = 14,984.56/x
  3. Step 3: Cross multiply
    20,666.51x = 28,469.16 × 14,984.56
  4. Step 4: Simplify right side
    20,666.51x = 426,597,765.00
  5. Step 5: Solve for x
    x = 426,597,765.00/20,666.51
  6. Step 6: Final answer
    x = 20,641.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.