Home / 13,643.57-20,468.76-4,759.03

Finding the Fourth Proportional to 13,643.57, 20,468.76 and 4,759.03

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Solution

The fourth proportional to 13,643.57, 20,468.76 and 4,759.03 is: 7,139.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.57 : 20,468.76 = 4,759.03 : x
  2. Step 2: Convert to fraction form
    13,643.57/20,468.76 = 4,759.03/x
  3. Step 3: Cross multiply
    13,643.57x = 20,468.76 × 4,759.03
  4. Step 4: Simplify right side
    13,643.57x = 97,411,415.38
  5. Step 5: Solve for x
    x = 97,411,415.38/13,643.57
  6. Step 6: Final answer
    x = 7,139.73

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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.