Home / 38,465.99-57,698.98-12,172.78

Finding the Fourth Proportional to 38,465.99, 57,698.98 and 12,172.78

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Solution

The fourth proportional to 38,465.99, 57,698.98 and 12,172.78 is: 18,259.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,465.99 : 57,698.98 = 12,172.78 : x
  2. Step 2: Convert to fraction form
    38,465.99/57,698.98 = 12,172.78/x
  3. Step 3: Cross multiply
    38,465.99x = 57,698.98 × 12,172.78
  4. Step 4: Simplify right side
    38,465.99x = 702,357,099.93
  5. Step 5: Solve for x
    x = 702,357,099.93/38,465.99
  6. Step 6: Final answer
    x = 18,259.17

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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.