Home / 9,678.08-13,361.29-7,405.24

Finding the Fourth Proportional to 9,678.08, 13,361.29 and 7,405.24

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Solution

The fourth proportional to 9,678.08, 13,361.29 and 7,405.24 is: 10,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.08 : 13,361.29 = 7,405.24 : x
  2. Step 2: Convert to fraction form
    9,678.08/13,361.29 = 7,405.24/x
  3. Step 3: Cross multiply
    9,678.08x = 13,361.29 × 7,405.24
  4. Step 4: Simplify right side
    9,678.08x = 98,943,455.33
  5. Step 5: Solve for x
    x = 98,943,455.33/9,678.08
  6. Step 6: Final answer
    x = 10,223.46

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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.