Home / 28,244.70-38,975.99-15,669.45

Finding the Fourth Proportional to 28,244.70, 38,975.99 and 15,669.45

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Solution

The fourth proportional to 28,244.70, 38,975.99 and 15,669.45 is: 21,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.70 : 38,975.99 = 15,669.45 : x
  2. Step 2: Convert to fraction form
    28,244.70/38,975.99 = 15,669.45/x
  3. Step 3: Cross multiply
    28,244.70x = 38,975.99 × 15,669.45
  4. Step 4: Simplify right side
    28,244.70x = 610,732,248.16
  5. Step 5: Solve for x
    x = 610,732,248.16/28,244.70
  6. Step 6: Final answer
    x = 21,622.90

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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.