Home / 30,975.96-42,747.66-16,829.76

Finding the Fourth Proportional to 30,975.96, 42,747.66 and 16,829.76

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Solution

The fourth proportional to 30,975.96, 42,747.66 and 16,829.76 is: 23,225.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.96 : 42,747.66 = 16,829.76 : x
  2. Step 2: Convert to fraction form
    30,975.96/42,747.66 = 16,829.76/x
  3. Step 3: Cross multiply
    30,975.96x = 42,747.66 × 16,829.76
  4. Step 4: Simplify right side
    30,975.96x = 719,432,858.36
  5. Step 5: Solve for x
    x = 719,432,858.36/30,975.96
  6. Step 6: Final answer
    x = 23,225.52

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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.