Home / 30,557.42-42,171.18-16,947.02

Finding the Fourth Proportional to 30,557.42, 42,171.18 and 16,947.02

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Solution

The fourth proportional to 30,557.42, 42,171.18 and 16,947.02 is: 23,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.42 : 42,171.18 = 16,947.02 : x
  2. Step 2: Convert to fraction form
    30,557.42/42,171.18 = 16,947.02/x
  3. Step 3: Cross multiply
    30,557.42x = 42,171.18 × 16,947.02
  4. Step 4: Simplify right side
    30,557.42x = 714,675,620.03
  5. Step 5: Solve for x
    x = 714,675,620.03/30,557.42
  6. Step 6: Final answer
    x = 23,387.96

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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.