Home / 28,809.84-43,186.50-13,812.70

Finding the Fourth Proportional to 28,809.84, 43,186.50 and 13,812.70

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Solution

The fourth proportional to 28,809.84, 43,186.50 and 13,812.70 is: 20,705.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.84 : 43,186.50 = 13,812.70 : x
  2. Step 2: Convert to fraction form
    28,809.84/43,186.50 = 13,812.70/x
  3. Step 3: Cross multiply
    28,809.84x = 43,186.50 × 13,812.70
  4. Step 4: Simplify right side
    28,809.84x = 596,522,140.94
  5. Step 5: Solve for x
    x = 596,522,140.94/28,809.84
  6. Step 6: Final answer
    x = 20,705.50

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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.