Home / 29,279.90-40,406.39-15,851.16

Finding the Fourth Proportional to 29,279.90, 40,406.39 and 15,851.16

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Solution

The fourth proportional to 29,279.90, 40,406.39 and 15,851.16 is: 21,874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.90 : 40,406.39 = 15,851.16 : x
  2. Step 2: Convert to fraction form
    29,279.90/40,406.39 = 15,851.16/x
  3. Step 3: Cross multiply
    29,279.90x = 40,406.39 × 15,851.16
  4. Step 4: Simplify right side
    29,279.90x = 640,488,222.26
  5. Step 5: Solve for x
    x = 640,488,222.26/29,279.90
  6. Step 6: Final answer
    x = 21,874.67

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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.