Home / 13,485.45-20,228.29-4,125.65

Finding the Fourth Proportional to 13,485.45, 20,228.29 and 4,125.65

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Solution

The fourth proportional to 13,485.45, 20,228.29 and 4,125.65 is: 6,188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.45 : 20,228.29 = 4,125.65 : x
  2. Step 2: Convert to fraction form
    13,485.45/20,228.29 = 4,125.65/x
  3. Step 3: Cross multiply
    13,485.45x = 20,228.29 × 4,125.65
  4. Step 4: Simplify right side
    13,485.45x = 83,454,733.18
  5. Step 5: Solve for x
    x = 83,454,733.18/13,485.45
  6. Step 6: Final answer
    x = 6,188.50

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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.