Home / 13,538.64-20,307.94-6,607.20

Finding the Fourth Proportional to 13,538.64, 20,307.94 and 6,607.20

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Solution

The fourth proportional to 13,538.64, 20,307.94 and 6,607.20 is: 9,910.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.64 : 20,307.94 = 6,607.20 : x
  2. Step 2: Convert to fraction form
    13,538.64/20,307.94 = 6,607.20/x
  3. Step 3: Cross multiply
    13,538.64x = 20,307.94 × 6,607.20
  4. Step 4: Simplify right side
    13,538.64x = 134,178,621.17
  5. Step 5: Solve for x
    x = 134,178,621.17/13,538.64
  6. Step 6: Final answer
    x = 9,910.79

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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.