Home / 34,857.81-48,104.69-20,518.38

Finding the Fourth Proportional to 34,857.81, 48,104.69 and 20,518.38

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Solution

The fourth proportional to 34,857.81, 48,104.69 and 20,518.38 is: 28,315.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,857.81 : 48,104.69 = 20,518.38 : x
  2. Step 2: Convert to fraction form
    34,857.81/48,104.69 = 20,518.38/x
  3. Step 3: Cross multiply
    34,857.81x = 48,104.69 × 20,518.38
  4. Step 4: Simplify right side
    34,857.81x = 987,030,206.61
  5. Step 5: Solve for x
    x = 987,030,206.61/34,857.81
  6. Step 6: Final answer
    x = 28,315.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.