Home / 19,940.01-29,799.85-18,787.74

Finding the Fourth Proportional to 19,940.01, 29,799.85 and 18,787.74

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Solution

The fourth proportional to 19,940.01, 29,799.85 and 18,787.74 is: 28,077.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.01 : 29,799.85 = 18,787.74 : x
  2. Step 2: Convert to fraction form
    19,940.01/29,799.85 = 18,787.74/x
  3. Step 3: Cross multiply
    19,940.01x = 29,799.85 × 18,787.74
  4. Step 4: Simplify right side
    19,940.01x = 559,871,833.84
  5. Step 5: Solve for x
    x = 559,871,833.84/19,940.01
  6. Step 6: Final answer
    x = 28,077.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.