Home / 15,317.40-21,140.30-9,352.52

Finding the Fourth Proportional to 15,317.40, 21,140.30 and 9,352.52

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Solution

The fourth proportional to 15,317.40, 21,140.30 and 9,352.52 is: 12,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.40 : 21,140.30 = 9,352.52 : x
  2. Step 2: Convert to fraction form
    15,317.40/21,140.30 = 9,352.52/x
  3. Step 3: Cross multiply
    15,317.40x = 21,140.30 × 9,352.52
  4. Step 4: Simplify right side
    15,317.40x = 197,715,078.56
  5. Step 5: Solve for x
    x = 197,715,078.56/15,317.40
  6. Step 6: Final answer
    x = 12,907.87

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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.