Home / 13,643.71-20,465.58-3,783.08

Finding the Fourth Proportional to 13,643.71, 20,465.58 and 3,783.08

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Solution

The fourth proportional to 13,643.71, 20,465.58 and 3,783.08 is: 5,674.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.71 : 20,465.58 = 3,783.08 : x
  2. Step 2: Convert to fraction form
    13,643.71/20,465.58 = 3,783.08/x
  3. Step 3: Cross multiply
    13,643.71x = 20,465.58 × 3,783.08
  4. Step 4: Simplify right side
    13,643.71x = 77,422,926.39
  5. Step 5: Solve for x
    x = 77,422,926.39/13,643.71
  6. Step 6: Final answer
    x = 5,674.62

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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.