Home / 14,281.80-21,430.80-5,517.33

Finding the Fourth Proportional to 14,281.80, 21,430.80 and 5,517.33

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Solution

The fourth proportional to 14,281.80, 21,430.80 and 5,517.33 is: 8,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.80 : 21,430.80 = 5,517.33 : x
  2. Step 2: Convert to fraction form
    14,281.80/21,430.80 = 5,517.33/x
  3. Step 3: Cross multiply
    14,281.80x = 21,430.80 × 5,517.33
  4. Step 4: Simplify right side
    14,281.80x = 118,240,795.76
  5. Step 5: Solve for x
    x = 118,240,795.76/14,281.80
  6. Step 6: Final answer
    x = 8,279.12

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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.