Home / 30,867.39-42,597.23-16,720.34

Finding the Fourth Proportional to 30,867.39, 42,597.23 and 16,720.34

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Solution

The fourth proportional to 30,867.39, 42,597.23 and 16,720.34 is: 23,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,867.39 : 42,597.23 = 16,720.34 : x
  2. Step 2: Convert to fraction form
    30,867.39/42,597.23 = 16,720.34/x
  3. Step 3: Cross multiply
    30,867.39x = 42,597.23 × 16,720.34
  4. Step 4: Simplify right side
    30,867.39x = 712,239,872.07
  5. Step 5: Solve for x
    x = 712,239,872.07/30,867.39
  6. Step 6: Final answer
    x = 23,074.19

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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.