Home / 12,999.78-19,488.03-4,677.84

Finding the Fourth Proportional to 12,999.78, 19,488.03 and 4,677.84

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Solution

The fourth proportional to 12,999.78, 19,488.03 and 4,677.84 is: 7,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.78 : 19,488.03 = 4,677.84 : x
  2. Step 2: Convert to fraction form
    12,999.78/19,488.03 = 4,677.84/x
  3. Step 3: Cross multiply
    12,999.78x = 19,488.03 × 4,677.84
  4. Step 4: Simplify right side
    12,999.78x = 91,161,886.26
  5. Step 5: Solve for x
    x = 91,161,886.26/12,999.78
  6. Step 6: Final answer
    x = 7,012.57

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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.