Home / 30,810.94-42,519.12-16,663.78

Finding the Fourth Proportional to 30,810.94, 42,519.12 and 16,663.78

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Solution

The fourth proportional to 30,810.94, 42,519.12 and 16,663.78 is: 22,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.94 : 42,519.12 = 16,663.78 : x
  2. Step 2: Convert to fraction form
    30,810.94/42,519.12 = 16,663.78/x
  3. Step 3: Cross multiply
    30,810.94x = 42,519.12 × 16,663.78
  4. Step 4: Simplify right side
    30,810.94x = 708,529,261.47
  5. Step 5: Solve for x
    x = 708,529,261.47/30,810.94
  6. Step 6: Final answer
    x = 22,996.03

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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.