Home / 30,383.70-45,575.55-19,886.10

Finding the Fourth Proportional to 30,383.70, 45,575.55 and 19,886.10

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Solution

The fourth proportional to 30,383.70, 45,575.55 and 19,886.10 is: 29,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,383.70 : 45,575.55 = 19,886.10 : x
  2. Step 2: Convert to fraction form
    30,383.70/45,575.55 = 19,886.10/x
  3. Step 3: Cross multiply
    30,383.70x = 45,575.55 × 19,886.10
  4. Step 4: Simplify right side
    30,383.70x = 906,319,944.86
  5. Step 5: Solve for x
    x = 906,319,944.86/30,383.70
  6. Step 6: Final answer
    x = 29,829.15

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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.