Home / 14,146.57-21,220.95-4,286.65

Finding the Fourth Proportional to 14,146.57, 21,220.95 and 4,286.65

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Solution

The fourth proportional to 14,146.57, 21,220.95 and 4,286.65 is: 6,430.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,146.57 : 21,220.95 = 4,286.65 : x
  2. Step 2: Convert to fraction form
    14,146.57/21,220.95 = 4,286.65/x
  3. Step 3: Cross multiply
    14,146.57x = 21,220.95 × 4,286.65
  4. Step 4: Simplify right side
    14,146.57x = 90,966,785.32
  5. Step 5: Solve for x
    x = 90,966,785.32/14,146.57
  6. Step 6: Final answer
    x = 6,430.31

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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.