Home / 13,639.50-20,459.25-5,437.26

Finding the Fourth Proportional to 13,639.50, 20,459.25 and 5,437.26

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Solution

The fourth proportional to 13,639.50, 20,459.25 and 5,437.26 is: 8,155.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.50 : 20,459.25 = 5,437.26 : x
  2. Step 2: Convert to fraction form
    13,639.50/20,459.25 = 5,437.26/x
  3. Step 3: Cross multiply
    13,639.50x = 20,459.25 × 5,437.26
  4. Step 4: Simplify right side
    13,639.50x = 111,242,261.66
  5. Step 5: Solve for x
    x = 111,242,261.66/13,639.50
  6. Step 6: Final answer
    x = 8,155.89

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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.