Home / 13,970.55-20,955.65-3,440.70

Finding the Fourth Proportional to 13,970.55, 20,955.65 and 3,440.70

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Solution

The fourth proportional to 13,970.55, 20,955.65 and 3,440.70 is: 5,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.55 : 20,955.65 = 3,440.70 : x
  2. Step 2: Convert to fraction form
    13,970.55/20,955.65 = 3,440.70/x
  3. Step 3: Cross multiply
    13,970.55x = 20,955.65 × 3,440.70
  4. Step 4: Simplify right side
    13,970.55x = 72,102,087.75
  5. Step 5: Solve for x
    x = 72,102,087.75/13,970.55
  6. Step 6: Final answer
    x = 5,161.00

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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.