Home / 28,556.55-39,462.26-21,470.67

Finding the Fourth Proportional to 28,556.55, 39,462.26 and 21,470.67

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Solution

The fourth proportional to 28,556.55, 39,462.26 and 21,470.67 is: 29,670.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.55 : 39,462.26 = 21,470.67 : x
  2. Step 2: Convert to fraction form
    28,556.55/39,462.26 = 21,470.67/x
  3. Step 3: Cross multiply
    28,556.55x = 39,462.26 × 21,470.67
  4. Step 4: Simplify right side
    28,556.55x = 847,281,054.56
  5. Step 5: Solve for x
    x = 847,281,054.56/28,556.55
  6. Step 6: Final answer
    x = 29,670.29

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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.