Home / 30,867.33-42,596.78-16,720.21

Finding the Fourth Proportional to 30,867.33, 42,596.78 and 16,720.21

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Solution

The fourth proportional to 30,867.33, 42,596.78 and 16,720.21 is: 23,073.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,867.33 : 42,596.78 = 16,720.21 : x
  2. Step 2: Convert to fraction form
    30,867.33/42,596.78 = 16,720.21/x
  3. Step 3: Cross multiply
    30,867.33x = 42,596.78 × 16,720.21
  4. Step 4: Simplify right side
    30,867.33x = 712,226,916.83
  5. Step 5: Solve for x
    x = 712,226,916.83/30,867.33
  6. Step 6: Final answer
    x = 23,073.81

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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.