Home / 13,570.64-18,728.01-7,909.04

Finding the Fourth Proportional to 13,570.64, 18,728.01 and 7,909.04

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Solution

The fourth proportional to 13,570.64, 18,728.01 and 7,909.04 is: 10,914.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.64 : 18,728.01 = 7,909.04 : x
  2. Step 2: Convert to fraction form
    13,570.64/18,728.01 = 7,909.04/x
  3. Step 3: Cross multiply
    13,570.64x = 18,728.01 × 7,909.04
  4. Step 4: Simplify right side
    13,570.64x = 148,120,627.03
  5. Step 5: Solve for x
    x = 148,120,627.03/13,570.64
  6. Step 6: Final answer
    x = 10,914.79

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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.