Home / 30,069.72-41,476.86-20,643.48

Finding the Fourth Proportional to 30,069.72, 41,476.86 and 20,643.48

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Solution

The fourth proportional to 30,069.72, 41,476.86 and 20,643.48 is: 28,474.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,069.72 : 41,476.86 = 20,643.48 : x
  2. Step 2: Convert to fraction form
    30,069.72/41,476.86 = 20,643.48/x
  3. Step 3: Cross multiply
    30,069.72x = 41,476.86 × 20,643.48
  4. Step 4: Simplify right side
    30,069.72x = 856,226,729.87
  5. Step 5: Solve for x
    x = 856,226,729.87/30,069.72
  6. Step 6: Final answer
    x = 28,474.72

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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.