Home / 15,231.87-20,973.26-13,332.83

Finding the Fourth Proportional to 15,231.87, 20,973.26 and 13,332.83

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Solution

The fourth proportional to 15,231.87, 20,973.26 and 13,332.83 is: 18,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.87 : 20,973.26 = 13,332.83 : x
  2. Step 2: Convert to fraction form
    15,231.87/20,973.26 = 13,332.83/x
  3. Step 3: Cross multiply
    15,231.87x = 20,973.26 × 13,332.83
  4. Step 4: Simplify right side
    15,231.87x = 279,632,817.25
  5. Step 5: Solve for x
    x = 279,632,817.25/15,231.87
  6. Step 6: Final answer
    x = 18,358.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.