Home / 30,871.58-42,602.91-16,724.42

Finding the Fourth Proportional to 30,871.58, 42,602.91 and 16,724.42

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Solution

The fourth proportional to 30,871.58, 42,602.91 and 16,724.42 is: 23,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.58 : 42,602.91 = 16,724.42 : x
  2. Step 2: Convert to fraction form
    30,871.58/42,602.91 = 16,724.42/x
  3. Step 3: Cross multiply
    30,871.58x = 42,602.91 × 16,724.42
  4. Step 4: Simplify right side
    30,871.58x = 712,509,177.81
  5. Step 5: Solve for x
    x = 712,509,177.81/30,871.58
  6. Step 6: Final answer
    x = 23,079.78

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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.