Home / 30,975.09-42,744.69-16,827.90

Finding the Fourth Proportional to 30,975.09, 42,744.69 and 16,827.90

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Solution

The fourth proportional to 30,975.09, 42,744.69 and 16,827.90 is: 23,221.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.09 : 42,744.69 = 16,827.90 : x
  2. Step 2: Convert to fraction form
    30,975.09/42,744.69 = 16,827.90/x
  3. Step 3: Cross multiply
    30,975.09x = 42,744.69 × 16,827.90
  4. Step 4: Simplify right side
    30,975.09x = 719,303,368.85
  5. Step 5: Solve for x
    x = 719,303,368.85/30,975.09
  6. Step 6: Final answer
    x = 23,221.99

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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.