Home / 14,281.76-19,708.85-7,821.37

Finding the Fourth Proportional to 14,281.76, 19,708.85 and 7,821.37

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Solution

The fourth proportional to 14,281.76, 19,708.85 and 7,821.37 is: 10,793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.76 : 19,708.85 = 7,821.37 : x
  2. Step 2: Convert to fraction form
    14,281.76/19,708.85 = 7,821.37/x
  3. Step 3: Cross multiply
    14,281.76x = 19,708.85 × 7,821.37
  4. Step 4: Simplify right side
    14,281.76x = 154,150,208.12
  5. Step 5: Solve for x
    x = 154,150,208.12/14,281.76
  6. Step 6: Final answer
    x = 10,793.50

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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.