Home / 13,617.72-20,271.67-13,543.61

Finding the Fourth Proportional to 13,617.72, 20,271.67 and 13,543.61

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Solution

The fourth proportional to 13,617.72, 20,271.67 and 13,543.61 is: 20,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.72 : 20,271.67 = 13,543.61 : x
  2. Step 2: Convert to fraction form
    13,617.72/20,271.67 = 13,543.61/x
  3. Step 3: Cross multiply
    13,617.72x = 20,271.67 × 13,543.61
  4. Step 4: Simplify right side
    13,617.72x = 274,551,457.31
  5. Step 5: Solve for x
    x = 274,551,457.31/13,617.72
  6. Step 6: Final answer
    x = 20,161.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.