Home / 15,420.21-23,129.83-4,326.67

Finding the Fourth Proportional to 15,420.21, 23,129.83 and 4,326.67

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Solution

The fourth proportional to 15,420.21, 23,129.83 and 4,326.67 is: 6,489.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.21 : 23,129.83 = 4,326.67 : x
  2. Step 2: Convert to fraction form
    15,420.21/23,129.83 = 4,326.67/x
  3. Step 3: Cross multiply
    15,420.21x = 23,129.83 × 4,326.67
  4. Step 4: Simplify right side
    15,420.21x = 100,075,141.57
  5. Step 5: Solve for x
    x = 100,075,141.57/15,420.21
  6. Step 6: Final answer
    x = 6,489.87

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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.