Home / 30,426.64-41,974.00-21,454.47

Finding the Fourth Proportional to 30,426.64, 41,974.00 and 21,454.47

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Solution

The fourth proportional to 30,426.64, 41,974.00 and 21,454.47 is: 29,596.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,426.64 : 41,974.00 = 21,454.47 : x
  2. Step 2: Convert to fraction form
    30,426.64/41,974.00 = 21,454.47/x
  3. Step 3: Cross multiply
    30,426.64x = 41,974.00 × 21,454.47
  4. Step 4: Simplify right side
    30,426.64x = 900,529,870.14
  5. Step 5: Solve for x
    x = 900,529,870.14/30,426.64
  6. Step 6: Final answer
    x = 29,596.76

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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.