Home / 30,817.57-46,258.26-18,979.87

Finding the Fourth Proportional to 30,817.57, 46,258.26 and 18,979.87

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Solution

The fourth proportional to 30,817.57, 46,258.26 and 18,979.87 is: 28,489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,817.57 : 46,258.26 = 18,979.87 : x
  2. Step 2: Convert to fraction form
    30,817.57/46,258.26 = 18,979.87/x
  3. Step 3: Cross multiply
    30,817.57x = 46,258.26 × 18,979.87
  4. Step 4: Simplify right side
    30,817.57x = 877,975,761.23
  5. Step 5: Solve for x
    x = 877,975,761.23/30,817.57
  6. Step 6: Final answer
    x = 28,489.45

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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.