Home / 30,228.21-45,320.64-14,208.78

Finding the Fourth Proportional to 30,228.21, 45,320.64 and 14,208.78

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Solution

The fourth proportional to 30,228.21, 45,320.64 and 14,208.78 is: 21,302.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,228.21 : 45,320.64 = 14,208.78 : x
  2. Step 2: Convert to fraction form
    30,228.21/45,320.64 = 14,208.78/x
  3. Step 3: Cross multiply
    30,228.21x = 45,320.64 × 14,208.78
  4. Step 4: Simplify right side
    30,228.21x = 643,951,003.22
  5. Step 5: Solve for x
    x = 643,951,003.22/30,228.21
  6. Step 6: Final answer
    x = 21,302.98

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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.