Home / 21,984.15-30,338.13-12,907.73

Finding the Fourth Proportional to 21,984.15, 30,338.13 and 12,907.73

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Solution

The fourth proportional to 21,984.15, 30,338.13 and 12,907.73 is: 17,812.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.15 : 30,338.13 = 12,907.73 : x
  2. Step 2: Convert to fraction form
    21,984.15/30,338.13 = 12,907.73/x
  3. Step 3: Cross multiply
    21,984.15x = 30,338.13 × 12,907.73
  4. Step 4: Simplify right side
    21,984.15x = 391,596,271.74
  5. Step 5: Solve for x
    x = 391,596,271.74/21,984.15
  6. Step 6: Final answer
    x = 17,812.67

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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.