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Finding the Fourth Proportional to 30,409.12, 45,616.12 and 10,692.10

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Solution

The fourth proportional to 30,409.12, 45,616.12 and 10,692.10 is: 16,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,409.12 : 45,616.12 = 10,692.10 : x
  2. Step 2: Convert to fraction form
    30,409.12/45,616.12 = 10,692.10/x
  3. Step 3: Cross multiply
    30,409.12x = 45,616.12 × 10,692.10
  4. Step 4: Simplify right side
    30,409.12x = 487,732,116.65
  5. Step 5: Solve for x
    x = 487,732,116.65/30,409.12
  6. Step 6: Final answer
    x = 16,039.01

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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.