Home / 13,089.64-18,069.60-8,615.74

Finding the Fourth Proportional to 13,089.64, 18,069.60 and 8,615.74

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Solution

The fourth proportional to 13,089.64, 18,069.60 and 8,615.74 is: 11,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.64 : 18,069.60 = 8,615.74 : x
  2. Step 2: Convert to fraction form
    13,089.64/18,069.60 = 8,615.74/x
  3. Step 3: Cross multiply
    13,089.64x = 18,069.60 × 8,615.74
  4. Step 4: Simplify right side
    13,089.64x = 155,682,975.50
  5. Step 5: Solve for x
    x = 155,682,975.50/13,089.64
  6. Step 6: Final answer
    x = 11,893.60

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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.