Home / 13,323.21-18,386.63-7,659.79

Finding the Fourth Proportional to 13,323.21, 18,386.63 and 7,659.79

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Solution

The fourth proportional to 13,323.21, 18,386.63 and 7,659.79 is: 10,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.21 : 18,386.63 = 7,659.79 : x
  2. Step 2: Convert to fraction form
    13,323.21/18,386.63 = 7,659.79/x
  3. Step 3: Cross multiply
    13,323.21x = 18,386.63 × 7,659.79
  4. Step 4: Simplify right side
    13,323.21x = 140,837,751.42
  5. Step 5: Solve for x
    x = 140,837,751.42/13,323.21
  6. Step 6: Final answer
    x = 10,570.86

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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.