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Finding the Fourth Proportional to 30,391.56, 45,607.70 and 10,670.16

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Solution

The fourth proportional to 30,391.56, 45,607.70 and 10,670.16 is: 16,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.56 : 45,607.70 = 10,670.16 : x
  2. Step 2: Convert to fraction form
    30,391.56/45,607.70 = 10,670.16/x
  3. Step 3: Cross multiply
    30,391.56x = 45,607.70 × 10,670.16
  4. Step 4: Simplify right side
    30,391.56x = 486,641,456.23
  5. Step 5: Solve for x
    x = 486,641,456.23/30,391.56
  6. Step 6: Final answer
    x = 16,012.39

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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.