Home / 12,384.40-18,552.30-7,439.35

Finding the Fourth Proportional to 12,384.40, 18,552.30 and 7,439.35

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Solution

The fourth proportional to 12,384.40, 18,552.30 and 7,439.35 is: 11,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.40 : 18,552.30 = 7,439.35 : x
  2. Step 2: Convert to fraction form
    12,384.40/18,552.30 = 7,439.35/x
  3. Step 3: Cross multiply
    12,384.40x = 18,552.30 × 7,439.35
  4. Step 4: Simplify right side
    12,384.40x = 138,017,053.01
  5. Step 5: Solve for x
    x = 138,017,053.01/12,384.40
  6. Step 6: Final answer
    x = 11,144.43

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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.