Home / 28,971.14-39,970.80-16,222.41

Finding the Fourth Proportional to 28,971.14, 39,970.80 and 16,222.41

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Solution

The fourth proportional to 28,971.14, 39,970.80 and 16,222.41 is: 22,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.14 : 39,970.80 = 16,222.41 : x
  2. Step 2: Convert to fraction form
    28,971.14/39,970.80 = 16,222.41/x
  3. Step 3: Cross multiply
    28,971.14x = 39,970.80 × 16,222.41
  4. Step 4: Simplify right side
    28,971.14x = 648,422,705.63
  5. Step 5: Solve for x
    x = 648,422,705.63/28,971.14
  6. Step 6: Final answer
    x = 22,381.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.