Home / 30,485.72-45,730.36-11,765.86

Finding the Fourth Proportional to 30,485.72, 45,730.36 and 11,765.86

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Solution

The fourth proportional to 30,485.72, 45,730.36 and 11,765.86 is: 17,649.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.72 : 45,730.36 = 11,765.86 : x
  2. Step 2: Convert to fraction form
    30,485.72/45,730.36 = 11,765.86/x
  3. Step 3: Cross multiply
    30,485.72x = 45,730.36 × 11,765.86
  4. Step 4: Simplify right side
    30,485.72x = 538,057,013.51
  5. Step 5: Solve for x
    x = 538,057,013.51/30,485.72
  6. Step 6: Final answer
    x = 17,649.48

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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.