Home / 19,120.68-26,381.70-11,157.84

Finding the Fourth Proportional to 19,120.68, 26,381.70 and 11,157.84

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Solution

The fourth proportional to 19,120.68, 26,381.70 and 11,157.84 is: 15,395.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.68 : 26,381.70 = 11,157.84 : x
  2. Step 2: Convert to fraction form
    19,120.68/26,381.70 = 11,157.84/x
  3. Step 3: Cross multiply
    19,120.68x = 26,381.70 × 11,157.84
  4. Step 4: Simplify right side
    19,120.68x = 294,362,787.53
  5. Step 5: Solve for x
    x = 294,362,787.53/19,120.68
  6. Step 6: Final answer
    x = 15,395.00

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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.