Home / 30,867.12-42,596.55-16,720.20

Finding the Fourth Proportional to 30,867.12, 42,596.55 and 16,720.20

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Solution

The fourth proportional to 30,867.12, 42,596.55 and 16,720.20 is: 23,073.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,867.12 : 42,596.55 = 16,720.20 : x
  2. Step 2: Convert to fraction form
    30,867.12/42,596.55 = 16,720.20/x
  3. Step 3: Cross multiply
    30,867.12x = 42,596.55 × 16,720.20
  4. Step 4: Simplify right side
    30,867.12x = 712,222,835.31
  5. Step 5: Solve for x
    x = 712,222,835.31/30,867.12
  6. Step 6: Final answer
    x = 23,073.84

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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.