Home / 20,929.79-31,354.58-20,226.30

Finding the Fourth Proportional to 20,929.79, 31,354.58 and 20,226.30

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Solution

The fourth proportional to 20,929.79, 31,354.58 and 20,226.30 is: 30,300.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.79 : 31,354.58 = 20,226.30 : x
  2. Step 2: Convert to fraction form
    20,929.79/31,354.58 = 20,226.30/x
  3. Step 3: Cross multiply
    20,929.79x = 31,354.58 × 20,226.30
  4. Step 4: Simplify right side
    20,929.79x = 634,187,141.45
  5. Step 5: Solve for x
    x = 634,187,141.45/20,929.79
  6. Step 6: Final answer
    x = 30,300.69

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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.