Home / 15,314.15-21,135.48-9,344.55

Finding the Fourth Proportional to 15,314.15, 21,135.48 and 9,344.55

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Solution

The fourth proportional to 15,314.15, 21,135.48 and 9,344.55 is: 12,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.15 : 21,135.48 = 9,344.55 : x
  2. Step 2: Convert to fraction form
    15,314.15/21,135.48 = 9,344.55/x
  3. Step 3: Cross multiply
    15,314.15x = 21,135.48 × 9,344.55
  4. Step 4: Simplify right side
    15,314.15x = 197,501,549.63
  5. Step 5: Solve for x
    x = 197,501,549.63/15,314.15
  6. Step 6: Final answer
    x = 12,896.67

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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.