Home / 20,929.84-31,394.70-5,347.48

Finding the Fourth Proportional to 20,929.84, 31,394.70 and 5,347.48

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Solution

The fourth proportional to 20,929.84, 31,394.70 and 5,347.48 is: 8,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.84 : 31,394.70 = 5,347.48 : x
  2. Step 2: Convert to fraction form
    20,929.84/31,394.70 = 5,347.48/x
  3. Step 3: Cross multiply
    20,929.84x = 31,394.70 × 5,347.48
  4. Step 4: Simplify right side
    20,929.84x = 167,882,530.36
  5. Step 5: Solve for x
    x = 167,882,530.36/20,929.84
  6. Step 6: Final answer
    x = 8,021.20

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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.