Home / 15,135.24-20,878.36-9,674.08

Finding the Fourth Proportional to 15,135.24, 20,878.36 and 9,674.08

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Solution

The fourth proportional to 15,135.24, 20,878.36 and 9,674.08 is: 13,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.24 : 20,878.36 = 9,674.08 : x
  2. Step 2: Convert to fraction form
    15,135.24/20,878.36 = 9,674.08/x
  3. Step 3: Cross multiply
    15,135.24x = 20,878.36 × 9,674.08
  4. Step 4: Simplify right side
    15,135.24x = 201,978,924.91
  5. Step 5: Solve for x
    x = 201,978,924.91/15,135.24
  6. Step 6: Final answer
    x = 13,344.94

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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.