Home / 14,199.71-21,283.40-8,640.81

Finding the Fourth Proportional to 14,199.71, 21,283.40 and 8,640.81

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Solution

The fourth proportional to 14,199.71, 21,283.40 and 8,640.81 is: 12,951.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,199.71 : 21,283.40 = 8,640.81 : x
  2. Step 2: Convert to fraction form
    14,199.71/21,283.40 = 8,640.81/x
  3. Step 3: Cross multiply
    14,199.71x = 21,283.40 × 8,640.81
  4. Step 4: Simplify right side
    14,199.71x = 183,905,772.35
  5. Step 5: Solve for x
    x = 183,905,772.35/14,199.71
  6. Step 6: Final answer
    x = 12,951.38

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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.