Home / 21,238.16-29,311.62-15,289.52

Finding the Fourth Proportional to 21,238.16, 29,311.62 and 15,289.52

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Solution

The fourth proportional to 21,238.16, 29,311.62 and 15,289.52 is: 21,101.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.16 : 29,311.62 = 15,289.52 : x
  2. Step 2: Convert to fraction form
    21,238.16/29,311.62 = 15,289.52/x
  3. Step 3: Cross multiply
    21,238.16x = 29,311.62 × 15,289.52
  4. Step 4: Simplify right side
    21,238.16x = 448,160,600.22
  5. Step 5: Solve for x
    x = 448,160,600.22/21,238.16
  6. Step 6: Final answer
    x = 21,101.67

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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.