Home / 13,727.61-18,937.11-8,683.35

Finding the Fourth Proportional to 13,727.61, 18,937.11 and 8,683.35

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Solution

The fourth proportional to 13,727.61, 18,937.11 and 8,683.35 is: 11,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.61 : 18,937.11 = 8,683.35 : x
  2. Step 2: Convert to fraction form
    13,727.61/18,937.11 = 8,683.35/x
  3. Step 3: Cross multiply
    13,727.61x = 18,937.11 × 8,683.35
  4. Step 4: Simplify right side
    13,727.61x = 164,437,554.12
  5. Step 5: Solve for x
    x = 164,437,554.12/13,727.61
  6. Step 6: Final answer
    x = 11,978.60

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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.