Home / 30,840.45-42,551.12-19,356.87

Finding the Fourth Proportional to 30,840.45, 42,551.12 and 19,356.87

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Solution

The fourth proportional to 30,840.45, 42,551.12 and 19,356.87 is: 26,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,840.45 : 42,551.12 = 19,356.87 : x
  2. Step 2: Convert to fraction form
    30,840.45/42,551.12 = 19,356.87/x
  3. Step 3: Cross multiply
    30,840.45x = 42,551.12 × 19,356.87
  4. Step 4: Simplify right side
    30,840.45x = 823,656,706.15
  5. Step 5: Solve for x
    x = 823,656,706.15/30,840.45
  6. Step 6: Final answer
    x = 26,707.03

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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.