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Finding the Fourth Proportional to 30,946, 42,710.88 and 18,370.48

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Solution

The fourth proportional to 30,946, 42,710.88 and 18,370.48 is: 25,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,946 : 42,710.88 = 18,370.48 : x
  2. Step 2: Convert to fraction form
    30,946/42,710.88 = 18,370.48/x
  3. Step 3: Cross multiply
    30,946x = 42,710.88 × 18,370.48
  4. Step 4: Simplify right side
    30,946x = 784,619,366.82
  5. Step 5: Solve for x
    x = 784,619,366.82/30,946
  6. Step 6: Final answer
    x = 25,354.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.