Home / 30,351.23-41,869.81-20,282.14

Finding the Fourth Proportional to 30,351.23, 41,869.81 and 20,282.14

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Solution

The fourth proportional to 30,351.23, 41,869.81 and 20,282.14 is: 27,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.23 : 41,869.81 = 20,282.14 : x
  2. Step 2: Convert to fraction form
    30,351.23/41,869.81 = 20,282.14/x
  3. Step 3: Cross multiply
    30,351.23x = 41,869.81 × 20,282.14
  4. Step 4: Simplify right side
    30,351.23x = 849,209,348.19
  5. Step 5: Solve for x
    x = 849,209,348.19/30,351.23
  6. Step 6: Final answer
    x = 27,979.40

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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.