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Finding the Fourth Proportional to 30,651.56, 45,976.40 and 8,466.28

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Solution

The fourth proportional to 30,651.56, 45,976.40 and 8,466.28 is: 12,699.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,651.56 : 45,976.40 = 8,466.28 : x
  2. Step 2: Convert to fraction form
    30,651.56/45,976.40 = 8,466.28/x
  3. Step 3: Cross multiply
    30,651.56x = 45,976.40 × 8,466.28
  4. Step 4: Simplify right side
    30,651.56x = 389,249,075.79
  5. Step 5: Solve for x
    x = 389,249,075.79/30,651.56
  6. Step 6: Final answer
    x = 12,699.16

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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.