Home / 30,956.80-42,720.24-16,809.52

Finding the Fourth Proportional to 30,956.80, 42,720.24 and 16,809.52

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Solution

The fourth proportional to 30,956.80, 42,720.24 and 16,809.52 is: 23,197.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,956.80 : 42,720.24 = 16,809.52 : x
  2. Step 2: Convert to fraction form
    30,956.80/42,720.24 = 16,809.52/x
  3. Step 3: Cross multiply
    30,956.80x = 42,720.24 × 16,809.52
  4. Step 4: Simplify right side
    30,956.80x = 718,106,728.68
  5. Step 5: Solve for x
    x = 718,106,728.68/30,956.80
  6. Step 6: Final answer
    x = 23,197.06

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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.