Home / 13,774.08-20,656.12-7,538.70

Finding the Fourth Proportional to 13,774.08, 20,656.12 and 7,538.70

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Solution

The fourth proportional to 13,774.08, 20,656.12 and 7,538.70 is: 11,305.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,774.08 : 20,656.12 = 7,538.70 : x
  2. Step 2: Convert to fraction form
    13,774.08/20,656.12 = 7,538.70/x
  3. Step 3: Cross multiply
    13,774.08x = 20,656.12 × 7,538.70
  4. Step 4: Simplify right side
    13,774.08x = 155,720,291.84
  5. Step 5: Solve for x
    x = 155,720,291.84/13,774.08
  6. Step 6: Final answer
    x = 11,305.31

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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.