Home / 30,215.54-41,663.84-20,656.99

Finding the Fourth Proportional to 30,215.54, 41,663.84 and 20,656.99

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Solution

The fourth proportional to 30,215.54, 41,663.84 and 20,656.99 is: 28,483.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.54 : 41,663.84 = 20,656.99 : x
  2. Step 2: Convert to fraction form
    30,215.54/41,663.84 = 20,656.99/x
  3. Step 3: Cross multiply
    30,215.54x = 41,663.84 × 20,656.99
  4. Step 4: Simplify right side
    30,215.54x = 860,649,475.04
  5. Step 5: Solve for x
    x = 860,649,475.04/30,215.54
  6. Step 6: Final answer
    x = 28,483.67

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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.