Home / 13,743.36-18,958.88-8,699.12

Finding the Fourth Proportional to 13,743.36, 18,958.88 and 8,699.12

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Solution

The fourth proportional to 13,743.36, 18,958.88 and 8,699.12 is: 12,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.36 : 18,958.88 = 8,699.12 : x
  2. Step 2: Convert to fraction form
    13,743.36/18,958.88 = 8,699.12/x
  3. Step 3: Cross multiply
    13,743.36x = 18,958.88 × 8,699.12
  4. Step 4: Simplify right side
    13,743.36x = 164,925,572.19
  5. Step 5: Solve for x
    x = 164,925,572.19/13,743.36
  6. Step 6: Final answer
    x = 12,000.38

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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.