Home / 13,003.94-19,418.18-12,866.60

Finding the Fourth Proportional to 13,003.94, 19,418.18 and 12,866.60

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Solution

The fourth proportional to 13,003.94, 19,418.18 and 12,866.60 is: 19,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,003.94 : 19,418.18 = 12,866.60 : x
  2. Step 2: Convert to fraction form
    13,003.94/19,418.18 = 12,866.60/x
  3. Step 3: Cross multiply
    13,003.94x = 19,418.18 × 12,866.60
  4. Step 4: Simplify right side
    13,003.94x = 249,845,954.79
  5. Step 5: Solve for x
    x = 249,845,954.79/13,003.94
  6. Step 6: Final answer
    x = 19,213.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.