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Finding the Fourth Proportional to 30,474.90, 42,048.99 and 17,892.90

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Solution

The fourth proportional to 30,474.90, 42,048.99 and 17,892.90 is: 24,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,474.90 : 42,048.99 = 17,892.90 : x
  2. Step 2: Convert to fraction form
    30,474.90/42,048.99 = 17,892.90/x
  3. Step 3: Cross multiply
    30,474.90x = 42,048.99 × 17,892.90
  4. Step 4: Simplify right side
    30,474.90x = 752,378,373.17
  5. Step 5: Solve for x
    x = 752,378,373.17/30,474.90
  6. Step 6: Final answer
    x = 24,688.46

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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.