Home / 20,699.20-31,048.80-14,867.20

Finding the Fourth Proportional to 20,699.20, 31,048.80 and 14,867.20

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Solution

The fourth proportional to 20,699.20, 31,048.80 and 14,867.20 is: 22,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.20 : 31,048.80 = 14,867.20 : x
  2. Step 2: Convert to fraction form
    20,699.20/31,048.80 = 14,867.20/x
  3. Step 3: Cross multiply
    20,699.20x = 31,048.80 × 14,867.20
  4. Step 4: Simplify right side
    20,699.20x = 461,608,719.36
  5. Step 5: Solve for x
    x = 461,608,719.36/20,699.20
  6. Step 6: Final answer
    x = 22,300.80

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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.