Home / 30,350.99-41,869.46-20,281.89

Finding the Fourth Proportional to 30,350.99, 41,869.46 and 20,281.89

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Solution

The fourth proportional to 30,350.99, 41,869.46 and 20,281.89 is: 27,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,350.99 : 41,869.46 = 20,281.89 : x
  2. Step 2: Convert to fraction form
    30,350.99/41,869.46 = 20,281.89/x
  3. Step 3: Cross multiply
    30,350.99x = 41,869.46 × 20,281.89
  4. Step 4: Simplify right side
    30,350.99x = 849,191,680.67
  5. Step 5: Solve for x
    x = 849,191,680.67/30,350.99
  6. Step 6: Final answer
    x = 27,979.05

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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.