Home / 13,970.04-20,955.29-3,440.09

Finding the Fourth Proportional to 13,970.04, 20,955.29 and 3,440.09

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Solution

The fourth proportional to 13,970.04, 20,955.29 and 3,440.09 is: 5,160.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.04 : 20,955.29 = 3,440.09 : x
  2. Step 2: Convert to fraction form
    13,970.04/20,955.29 = 3,440.09/x
  3. Step 3: Cross multiply
    13,970.04x = 20,955.29 × 3,440.09
  4. Step 4: Simplify right side
    13,970.04x = 72,087,961.60
  5. Step 5: Solve for x
    x = 72,087,961.60/13,970.04
  6. Step 6: Final answer
    x = 5,160.18

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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.