Home / 12,426.72-18,678.48-11,812.32

Finding the Fourth Proportional to 12,426.72, 18,678.48 and 11,812.32

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Solution

The fourth proportional to 12,426.72, 18,678.48 and 11,812.32 is: 17,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.72 : 18,678.48 = 11,812.32 : x
  2. Step 2: Convert to fraction form
    12,426.72/18,678.48 = 11,812.32/x
  3. Step 3: Cross multiply
    12,426.72x = 18,678.48 × 11,812.32
  4. Step 4: Simplify right side
    12,426.72x = 220,636,182.87
  5. Step 5: Solve for x
    x = 220,636,182.87/12,426.72
  6. Step 6: Final answer
    x = 17,754.98

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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.