Home / 30,158.68-41,620.62-19,557.40

Finding the Fourth Proportional to 30,158.68, 41,620.62 and 19,557.40

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Solution

The fourth proportional to 30,158.68, 41,620.62 and 19,557.40 is: 26,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,158.68 : 41,620.62 = 19,557.40 : x
  2. Step 2: Convert to fraction form
    30,158.68/41,620.62 = 19,557.40/x
  3. Step 3: Cross multiply
    30,158.68x = 41,620.62 × 19,557.40
  4. Step 4: Simplify right side
    30,158.68x = 813,991,113.59
  5. Step 5: Solve for x
    x = 813,991,113.59/30,158.68
  6. Step 6: Final answer
    x = 26,990.28

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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.