Home / 30,958.61-42,722.64-16,811.55

Finding the Fourth Proportional to 30,958.61, 42,722.64 and 16,811.55

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Solution

The fourth proportional to 30,958.61, 42,722.64 and 16,811.55 is: 23,199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,958.61 : 42,722.64 = 16,811.55 : x
  2. Step 2: Convert to fraction form
    30,958.61/42,722.64 = 16,811.55/x
  3. Step 3: Cross multiply
    30,958.61x = 42,722.64 × 16,811.55
  4. Step 4: Simplify right side
    30,958.61x = 718,233,798.49
  5. Step 5: Solve for x
    x = 718,233,798.49/30,958.61
  6. Step 6: Final answer
    x = 23,199.81

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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.