Home / 13,661.39-20,487.15-4,774.23

Finding the Fourth Proportional to 13,661.39, 20,487.15 and 4,774.23

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Solution

The fourth proportional to 13,661.39, 20,487.15 and 4,774.23 is: 7,159.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.39 : 20,487.15 = 4,774.23 : x
  2. Step 2: Convert to fraction form
    13,661.39/20,487.15 = 4,774.23/x
  3. Step 3: Cross multiply
    13,661.39x = 20,487.15 × 4,774.23
  4. Step 4: Simplify right side
    13,661.39x = 97,810,366.14
  5. Step 5: Solve for x
    x = 97,810,366.14/13,661.39
  6. Step 6: Final answer
    x = 7,159.62

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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.