Home / 15,370.20-21,166.25-13,352.67

Finding the Fourth Proportional to 15,370.20, 21,166.25 and 13,352.67

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Solution

The fourth proportional to 15,370.20, 21,166.25 and 13,352.67 is: 18,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.20 : 21,166.25 = 13,352.67 : x
  2. Step 2: Convert to fraction form
    15,370.20/21,166.25 = 13,352.67/x
  3. Step 3: Cross multiply
    15,370.20x = 21,166.25 × 13,352.67
  4. Step 4: Simplify right side
    15,370.20x = 282,625,884.62
  5. Step 5: Solve for x
    x = 282,625,884.62/15,370.20
  6. Step 6: Final answer
    x = 18,387.91

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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.