Home / 30,811.06-42,519.29-16,663.90

Finding the Fourth Proportional to 30,811.06, 42,519.29 and 16,663.90

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Solution

The fourth proportional to 30,811.06, 42,519.29 and 16,663.90 is: 22,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.06 : 42,519.29 = 16,663.90 : x
  2. Step 2: Convert to fraction form
    30,811.06/42,519.29 = 16,663.90/x
  3. Step 3: Cross multiply
    30,811.06x = 42,519.29 × 16,663.90
  4. Step 4: Simplify right side
    30,811.06x = 708,537,196.63
  5. Step 5: Solve for x
    x = 708,537,196.63/30,811.06
  6. Step 6: Final answer
    x = 22,996.20

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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.