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Finding the Fourth Proportional to 30,798.96, 42,488.28 and 19,463.28

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Solution

The fourth proportional to 30,798.96, 42,488.28 and 19,463.28 is: 26,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,798.96 : 42,488.28 = 19,463.28 : x
  2. Step 2: Convert to fraction form
    30,798.96/42,488.28 = 19,463.28/x
  3. Step 3: Cross multiply
    30,798.96x = 42,488.28 × 19,463.28
  4. Step 4: Simplify right side
    30,798.96x = 826,961,290.36
  5. Step 5: Solve for x
    x = 826,961,290.36/30,798.96
  6. Step 6: Final answer
    x = 26,850.30

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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.