Home / 30,670.80-42,327.27-19,336.20

Finding the Fourth Proportional to 30,670.80, 42,327.27 and 19,336.20

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Solution

The fourth proportional to 30,670.80, 42,327.27 and 19,336.20 is: 26,684.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,670.80 : 42,327.27 = 19,336.20 : x
  2. Step 2: Convert to fraction form
    30,670.80/42,327.27 = 19,336.20/x
  3. Step 3: Cross multiply
    30,670.80x = 42,327.27 × 19,336.20
  4. Step 4: Simplify right side
    30,670.80x = 818,448,558.17
  5. Step 5: Solve for x
    x = 818,448,558.17/30,670.80
  6. Step 6: Final answer
    x = 26,684.94

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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.