Home / 30,130.72-45,169.34-11,397.64

Finding the Fourth Proportional to 30,130.72, 45,169.34 and 11,397.64

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Solution

The fourth proportional to 30,130.72, 45,169.34 and 11,397.64 is: 17,086.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.72 : 45,169.34 = 11,397.64 : x
  2. Step 2: Convert to fraction form
    30,130.72/45,169.34 = 11,397.64/x
  3. Step 3: Cross multiply
    30,130.72x = 45,169.34 × 11,397.64
  4. Step 4: Simplify right side
    30,130.72x = 514,823,876.36
  5. Step 5: Solve for x
    x = 514,823,876.36/30,130.72
  6. Step 6: Final answer
    x = 17,086.34

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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.