Home / 13,440.81-18,567.90-9,923.43

Finding the Fourth Proportional to 13,440.81, 18,567.90 and 9,923.43

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Solution

The fourth proportional to 13,440.81, 18,567.90 and 9,923.43 is: 13,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.81 : 18,567.90 = 9,923.43 : x
  2. Step 2: Convert to fraction form
    13,440.81/18,567.90 = 9,923.43/x
  3. Step 3: Cross multiply
    13,440.81x = 18,567.90 × 9,923.43
  4. Step 4: Simplify right side
    13,440.81x = 184,257,255.90
  5. Step 5: Solve for x
    x = 184,257,255.90/13,440.81
  6. Step 6: Final answer
    x = 13,708.79

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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.