Home / 30,728.77-42,399.64-17,300.59

Finding the Fourth Proportional to 30,728.77, 42,399.64 and 17,300.59

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Solution

The fourth proportional to 30,728.77, 42,399.64 and 17,300.59 is: 23,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.77 : 42,399.64 = 17,300.59 : x
  2. Step 2: Convert to fraction form
    30,728.77/42,399.64 = 17,300.59/x
  3. Step 3: Cross multiply
    30,728.77x = 42,399.64 × 17,300.59
  4. Step 4: Simplify right side
    30,728.77x = 733,538,787.79
  5. Step 5: Solve for x
    x = 733,538,787.79/30,728.77
  6. Step 6: Final answer
    x = 23,871.40

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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.