Home / 13,125.45-19,685.40-4,809.36

Finding the Fourth Proportional to 13,125.45, 19,685.40 and 4,809.36

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Solution

The fourth proportional to 13,125.45, 19,685.40 and 4,809.36 is: 7,213.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.45 : 19,685.40 = 4,809.36 : x
  2. Step 2: Convert to fraction form
    13,125.45/19,685.40 = 4,809.36/x
  3. Step 3: Cross multiply
    13,125.45x = 19,685.40 × 4,809.36
  4. Step 4: Simplify right side
    13,125.45x = 94,674,175.34
  5. Step 5: Solve for x
    x = 94,674,175.34/13,125.45
  6. Step 6: Final answer
    x = 7,213.02

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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.