Home / 13,199.40-19,799.10-12,335.40

Finding the Fourth Proportional to 13,199.40, 19,799.10 and 12,335.40

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Solution

The fourth proportional to 13,199.40, 19,799.10 and 12,335.40 is: 18,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.40 : 19,799.10 = 12,335.40 : x
  2. Step 2: Convert to fraction form
    13,199.40/19,799.10 = 12,335.40/x
  3. Step 3: Cross multiply
    13,199.40x = 19,799.10 × 12,335.40
  4. Step 4: Simplify right side
    13,199.40x = 244,229,818.14
  5. Step 5: Solve for x
    x = 244,229,818.14/13,199.40
  6. Step 6: Final answer
    x = 18,503.10

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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.