Home / 13,110.86-18,091.55-7,660.04

Finding the Fourth Proportional to 13,110.86, 18,091.55 and 7,660.04

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Solution

The fourth proportional to 13,110.86, 18,091.55 and 7,660.04 is: 10,570.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.86 : 18,091.55 = 7,660.04 : x
  2. Step 2: Convert to fraction form
    13,110.86/18,091.55 = 7,660.04/x
  3. Step 3: Cross multiply
    13,110.86x = 18,091.55 × 7,660.04
  4. Step 4: Simplify right side
    13,110.86x = 138,581,925.35
  5. Step 5: Solve for x
    x = 138,581,925.35/13,110.86
  6. Step 6: Final answer
    x = 10,570.01

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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.