Home / 13,091.19-18,066.02-7,122.86

Finding the Fourth Proportional to 13,091.19, 18,066.02 and 7,122.86

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Solution

The fourth proportional to 13,091.19, 18,066.02 and 7,122.86 is: 9,829.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.19 : 18,066.02 = 7,122.86 : x
  2. Step 2: Convert to fraction form
    13,091.19/18,066.02 = 7,122.86/x
  3. Step 3: Cross multiply
    13,091.19x = 18,066.02 × 7,122.86
  4. Step 4: Simplify right side
    13,091.19x = 128,681,686.05
  5. Step 5: Solve for x
    x = 128,681,686.05/13,091.19
  6. Step 6: Final answer
    x = 9,829.64

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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.