Home / 28,350.89-39,124.23-15,775.64

Finding the Fourth Proportional to 28,350.89, 39,124.23 and 15,775.64

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Solution

The fourth proportional to 28,350.89, 39,124.23 and 15,775.64 is: 21,770.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,350.89 : 39,124.23 = 15,775.64 : x
  2. Step 2: Convert to fraction form
    28,350.89/39,124.23 = 15,775.64/x
  3. Step 3: Cross multiply
    28,350.89x = 39,124.23 × 15,775.64
  4. Step 4: Simplify right side
    28,350.89x = 617,209,767.76
  5. Step 5: Solve for x
    x = 617,209,767.76/28,350.89
  6. Step 6: Final answer
    x = 21,770.38

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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.