Home / 10,212.84-15,316.98-3,970.80

Finding the Fourth Proportional to 10,212.84, 15,316.98 and 3,970.80

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Solution

The fourth proportional to 10,212.84, 15,316.98 and 3,970.80 is: 5,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.84 : 15,316.98 = 3,970.80 : x
  2. Step 2: Convert to fraction form
    10,212.84/15,316.98 = 3,970.80/x
  3. Step 3: Cross multiply
    10,212.84x = 15,316.98 × 3,970.80
  4. Step 4: Simplify right side
    10,212.84x = 60,820,664.18
  5. Step 5: Solve for x
    x = 60,820,664.18/10,212.84
  6. Step 6: Final answer
    x = 5,955.31

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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.