Home / 30,426.12-45,619.65-12,669.09

Finding the Fourth Proportional to 30,426.12, 45,619.65 and 12,669.09

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Solution

The fourth proportional to 30,426.12, 45,619.65 and 12,669.09 is: 18,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,426.12 : 45,619.65 = 12,669.09 : x
  2. Step 2: Convert to fraction form
    30,426.12/45,619.65 = 12,669.09/x
  3. Step 3: Cross multiply
    30,426.12x = 45,619.65 × 12,669.09
  4. Step 4: Simplify right side
    30,426.12x = 577,959,451.62
  5. Step 5: Solve for x
    x = 577,959,451.62/30,426.12
  6. Step 6: Final answer
    x = 18,995.50

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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.