Home / 30,557.72-42,168.89-16,945.68

Finding the Fourth Proportional to 30,557.72, 42,168.89 and 16,945.68

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Solution

The fourth proportional to 30,557.72, 42,168.89 and 16,945.68 is: 23,384.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.72 : 42,168.89 = 16,945.68 : x
  2. Step 2: Convert to fraction form
    30,557.72/42,168.89 = 16,945.68/x
  3. Step 3: Cross multiply
    30,557.72x = 42,168.89 × 16,945.68
  4. Step 4: Simplify right side
    30,557.72x = 714,580,515.90
  5. Step 5: Solve for x
    x = 714,580,515.90/30,557.72
  6. Step 6: Final answer
    x = 23,384.62

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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.