Home / 30,165.93-45,255.40-9,104.21

Finding the Fourth Proportional to 30,165.93, 45,255.40 and 9,104.21

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Solution

The fourth proportional to 30,165.93, 45,255.40 and 9,104.21 is: 13,658.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,165.93 : 45,255.40 = 9,104.21 : x
  2. Step 2: Convert to fraction form
    30,165.93/45,255.40 = 9,104.21/x
  3. Step 3: Cross multiply
    30,165.93x = 45,255.40 × 9,104.21
  4. Step 4: Simplify right side
    30,165.93x = 412,014,619.71
  5. Step 5: Solve for x
    x = 412,014,619.71/30,165.93
  6. Step 6: Final answer
    x = 13,658.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.