Home / 30,663.60-42,323.22-18,736.98

Finding the Fourth Proportional to 30,663.60, 42,323.22 and 18,736.98

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Solution

The fourth proportional to 30,663.60, 42,323.22 and 18,736.98 is: 25,861.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.60 : 42,323.22 = 18,736.98 : x
  2. Step 2: Convert to fraction form
    30,663.60/42,323.22 = 18,736.98/x
  3. Step 3: Cross multiply
    30,663.60x = 42,323.22 × 18,736.98
  4. Step 4: Simplify right side
    30,663.60x = 793,009,326.68
  5. Step 5: Solve for x
    x = 793,009,326.68/30,663.60
  6. Step 6: Final answer
    x = 25,861.59

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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.