Home / 13,405.13-20,116.91-4,640.06

Finding the Fourth Proportional to 13,405.13, 20,116.91 and 4,640.06

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Solution

The fourth proportional to 13,405.13, 20,116.91 and 4,640.06 is: 6,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.13 : 20,116.91 = 4,640.06 : x
  2. Step 2: Convert to fraction form
    13,405.13/20,116.91 = 4,640.06/x
  3. Step 3: Cross multiply
    13,405.13x = 20,116.91 × 4,640.06
  4. Step 4: Simplify right side
    13,405.13x = 93,343,545.63
  5. Step 5: Solve for x
    x = 93,343,545.63/13,405.13
  6. Step 6: Final answer
    x = 6,963.27

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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.