Home / 13,078.32-18,055.52-8,615.04

Finding the Fourth Proportional to 13,078.32, 18,055.52 and 8,615.04

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Solution

The fourth proportional to 13,078.32, 18,055.52 and 8,615.04 is: 11,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.32 : 18,055.52 = 8,615.04 : x
  2. Step 2: Convert to fraction form
    13,078.32/18,055.52 = 8,615.04/x
  3. Step 3: Cross multiply
    13,078.32x = 18,055.52 × 8,615.04
  4. Step 4: Simplify right side
    13,078.32x = 155,549,027.02
  5. Step 5: Solve for x
    x = 155,549,027.02/13,078.32
  6. Step 6: Final answer
    x = 11,893.66

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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.