Home / 30,006.40-45,009.60-7,820.52

Finding the Fourth Proportional to 30,006.40, 45,009.60 and 7,820.52

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Solution

The fourth proportional to 30,006.40, 45,009.60 and 7,820.52 is: 11,730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,006.40 : 45,009.60 = 7,820.52 : x
  2. Step 2: Convert to fraction form
    30,006.40/45,009.60 = 7,820.52/x
  3. Step 3: Cross multiply
    30,006.40x = 45,009.60 × 7,820.52
  4. Step 4: Simplify right side
    30,006.40x = 351,998,476.99
  5. Step 5: Solve for x
    x = 351,998,476.99/30,006.40
  6. Step 6: Final answer
    x = 11,730.78

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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.