Home / 28,765.50-39,698.55-16,189.98

Finding the Fourth Proportional to 28,765.50, 39,698.55 and 16,189.98

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Solution

The fourth proportional to 28,765.50, 39,698.55 and 16,189.98 is: 22,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.50 : 39,698.55 = 16,189.98 : x
  2. Step 2: Convert to fraction form
    28,765.50/39,698.55 = 16,189.98/x
  3. Step 3: Cross multiply
    28,765.50x = 39,698.55 × 16,189.98
  4. Step 4: Simplify right side
    28,765.50x = 642,718,730.53
  5. Step 5: Solve for x
    x = 642,718,730.53/28,765.50
  6. Step 6: Final answer
    x = 22,343.39

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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.