Home / 28,770.99-43,140.07-15,427.55

Finding the Fourth Proportional to 28,770.99, 43,140.07 and 15,427.55

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Solution

The fourth proportional to 28,770.99, 43,140.07 and 15,427.55 is: 23,132.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,770.99 : 43,140.07 = 15,427.55 : x
  2. Step 2: Convert to fraction form
    28,770.99/43,140.07 = 15,427.55/x
  3. Step 3: Cross multiply
    28,770.99x = 43,140.07 × 15,427.55
  4. Step 4: Simplify right side
    28,770.99x = 665,545,586.93
  5. Step 5: Solve for x
    x = 665,545,586.93/28,770.99
  6. Step 6: Final answer
    x = 23,132.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.