Home / 13,605.90-20,411.39-4,720.83

Finding the Fourth Proportional to 13,605.90, 20,411.39 and 4,720.83

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Solution

The fourth proportional to 13,605.90, 20,411.39 and 4,720.83 is: 7,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.90 : 20,411.39 = 4,720.83 : x
  2. Step 2: Convert to fraction form
    13,605.90/20,411.39 = 4,720.83/x
  3. Step 3: Cross multiply
    13,605.90x = 20,411.39 × 4,720.83
  4. Step 4: Simplify right side
    13,605.90x = 96,358,702.25
  5. Step 5: Solve for x
    x = 96,358,702.25/13,605.90
  6. Step 6: Final answer
    x = 7,082.13

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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.