Home / 9,438.21-13,024.64-5,131.40

Finding the Fourth Proportional to 9,438.21, 13,024.64 and 5,131.40

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Solution

The fourth proportional to 9,438.21, 13,024.64 and 5,131.40 is: 7,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,438.21 : 13,024.64 = 5,131.40 : x
  2. Step 2: Convert to fraction form
    9,438.21/13,024.64 = 5,131.40/x
  3. Step 3: Cross multiply
    9,438.21x = 13,024.64 × 5,131.40
  4. Step 4: Simplify right side
    9,438.21x = 66,834,585.40
  5. Step 5: Solve for x
    x = 66,834,585.40/9,438.21
  6. Step 6: Final answer
    x = 7,081.28

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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.