Home / 28,970.84-39,970.44-16,222.14

Finding the Fourth Proportional to 28,970.84, 39,970.44 and 16,222.14

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Solution

The fourth proportional to 28,970.84, 39,970.44 and 16,222.14 is: 22,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,970.84 : 39,970.44 = 16,222.14 : x
  2. Step 2: Convert to fraction form
    28,970.84/39,970.44 = 16,222.14/x
  3. Step 3: Cross multiply
    28,970.84x = 39,970.44 × 16,222.14
  4. Step 4: Simplify right side
    28,970.84x = 648,406,073.54
  5. Step 5: Solve for x
    x = 648,406,073.54/28,970.84
  6. Step 6: Final answer
    x = 22,381.33

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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.