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Finding the Fourth Proportional to 30,374.74, 45,562.42 and 10,653.78

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Solution

The fourth proportional to 30,374.74, 45,562.42 and 10,653.78 is: 15,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,374.74 : 45,562.42 = 10,653.78 : x
  2. Step 2: Convert to fraction form
    30,374.74/45,562.42 = 10,653.78/x
  3. Step 3: Cross multiply
    30,374.74x = 45,562.42 × 10,653.78
  4. Step 4: Simplify right side
    30,374.74x = 485,411,998.95
  5. Step 5: Solve for x
    x = 485,411,998.95/30,374.74
  6. Step 6: Final answer
    x = 15,980.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.