Home / 30,570.81-42,189.89-16,963.31

Finding the Fourth Proportional to 30,570.81, 42,189.89 and 16,963.31

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Solution

The fourth proportional to 30,570.81, 42,189.89 and 16,963.31 is: 23,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570.81 : 42,189.89 = 16,963.31 : x
  2. Step 2: Convert to fraction form
    30,570.81/42,189.89 = 16,963.31/x
  3. Step 3: Cross multiply
    30,570.81x = 42,189.89 × 16,963.31
  4. Step 4: Simplify right side
    30,570.81x = 715,680,182.94
  5. Step 5: Solve for x
    x = 715,680,182.94/30,570.81
  6. Step 6: Final answer
    x = 23,410.57

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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.