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Finding the Fourth Proportional to 13,457.16, 20,188.98 and 4,223.16

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Solution

The fourth proportional to 13,457.16, 20,188.98 and 4,223.16 is: 6,335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.16 : 20,188.98 = 4,223.16 : x
  2. Step 2: Convert to fraction form
    13,457.16/20,188.98 = 4,223.16/x
  3. Step 3: Cross multiply
    13,457.16x = 20,188.98 × 4,223.16
  4. Step 4: Simplify right side
    13,457.16x = 85,261,292.78
  5. Step 5: Solve for x
    x = 85,261,292.78/13,457.16
  6. Step 6: Final answer
    x = 6,335.76

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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.