Home / 13,643.39-20,465.96-4,283.78

Finding the Fourth Proportional to 13,643.39, 20,465.96 and 4,283.78

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Solution

The fourth proportional to 13,643.39, 20,465.96 and 4,283.78 is: 6,425.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.39 : 20,465.96 = 4,283.78 : x
  2. Step 2: Convert to fraction form
    13,643.39/20,465.96 = 4,283.78/x
  3. Step 3: Cross multiply
    13,643.39x = 20,465.96 × 4,283.78
  4. Step 4: Simplify right side
    13,643.39x = 87,671,670.13
  5. Step 5: Solve for x
    x = 87,671,670.13/13,643.39
  6. Step 6: Final answer
    x = 6,425.94

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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.