Home / 13,561.04-18,735.63-12,822.86

Finding the Fourth Proportional to 13,561.04, 18,735.63 and 12,822.86

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Solution

The fourth proportional to 13,561.04, 18,735.63 and 12,822.86 is: 17,715.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.04 : 18,735.63 = 12,822.86 : x
  2. Step 2: Convert to fraction form
    13,561.04/18,735.63 = 12,822.86/x
  3. Step 3: Cross multiply
    13,561.04x = 18,735.63 × 12,822.86
  4. Step 4: Simplify right side
    13,561.04x = 240,244,360.50
  5. Step 5: Solve for x
    x = 240,244,360.50/13,561.04
  6. Step 6: Final answer
    x = 17,715.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.