Home / 13,538.07-20,307.41-4,178.32

Finding the Fourth Proportional to 13,538.07, 20,307.41 and 4,178.32

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Solution

The fourth proportional to 13,538.07, 20,307.41 and 4,178.32 is: 6,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.07 : 20,307.41 = 4,178.32 : x
  2. Step 2: Convert to fraction form
    13,538.07/20,307.41 = 4,178.32/x
  3. Step 3: Cross multiply
    13,538.07x = 20,307.41 × 4,178.32
  4. Step 4: Simplify right side
    13,538.07x = 84,850,801.36
  5. Step 5: Solve for x
    x = 84,850,801.36/13,538.07
  6. Step 6: Final answer
    x = 6,267.57

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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.