Home / 12,279.84-18,419.89-9,830.23

Finding the Fourth Proportional to 12,279.84, 18,419.89 and 9,830.23

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Solution

The fourth proportional to 12,279.84, 18,419.89 and 9,830.23 is: 14,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.84 : 18,419.89 = 9,830.23 : x
  2. Step 2: Convert to fraction form
    12,279.84/18,419.89 = 9,830.23/x
  3. Step 3: Cross multiply
    12,279.84x = 18,419.89 × 9,830.23
  4. Step 4: Simplify right side
    12,279.84x = 181,071,806.69
  5. Step 5: Solve for x
    x = 181,071,806.69/12,279.84
  6. Step 6: Final answer
    x = 14,745.45

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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.