Home / 13,175.55-19,720.35-7,162.58

Finding the Fourth Proportional to 13,175.55, 19,720.35 and 7,162.58

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Solution

The fourth proportional to 13,175.55, 19,720.35 and 7,162.58 is: 10,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.55 : 19,720.35 = 7,162.58 : x
  2. Step 2: Convert to fraction form
    13,175.55/19,720.35 = 7,162.58/x
  3. Step 3: Cross multiply
    13,175.55x = 19,720.35 × 7,162.58
  4. Step 4: Simplify right side
    13,175.55x = 141,248,485.90
  5. Step 5: Solve for x
    x = 141,248,485.90/13,175.55
  6. Step 6: Final answer
    x = 10,720.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.