Home / 30,581.27-45,863.60-8,389.40

Finding the Fourth Proportional to 30,581.27, 45,863.60 and 8,389.40

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Solution

The fourth proportional to 30,581.27, 45,863.60 and 8,389.40 is: 12,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.27 : 45,863.60 = 8,389.40 : x
  2. Step 2: Convert to fraction form
    30,581.27/45,863.60 = 8,389.40/x
  3. Step 3: Cross multiply
    30,581.27x = 45,863.60 × 8,389.40
  4. Step 4: Simplify right side
    30,581.27x = 384,767,963.49
  5. Step 5: Solve for x
    x = 384,767,963.49/30,581.27
  6. Step 6: Final answer
    x = 12,581.82

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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.