Home / 30,128.72-45,166.34-11,395.64

Finding the Fourth Proportional to 30,128.72, 45,166.34 and 11,395.64

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Solution

The fourth proportional to 30,128.72, 45,166.34 and 11,395.64 is: 17,083.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.72 : 45,166.34 = 11,395.64 : x
  2. Step 2: Convert to fraction form
    30,128.72/45,166.34 = 11,395.64/x
  3. Step 3: Cross multiply
    30,128.72x = 45,166.34 × 11,395.64
  4. Step 4: Simplify right side
    30,128.72x = 514,699,350.76
  5. Step 5: Solve for x
    x = 514,699,350.76/30,128.72
  6. Step 6: Final answer
    x = 17,083.35

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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.