Home / 20,966.48-31,450.04-5,383.76

Finding the Fourth Proportional to 20,966.48, 31,450.04 and 5,383.76

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Solution

The fourth proportional to 20,966.48, 31,450.04 and 5,383.76 is: 8,075.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.48 : 31,450.04 = 5,383.76 : x
  2. Step 2: Convert to fraction form
    20,966.48/31,450.04 = 5,383.76/x
  3. Step 3: Cross multiply
    20,966.48x = 31,450.04 × 5,383.76
  4. Step 4: Simplify right side
    20,966.48x = 169,319,467.35
  5. Step 5: Solve for x
    x = 169,319,467.35/20,966.48
  6. Step 6: Final answer
    x = 8,075.72

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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.