Home / 22,158.87-30,578.27-12,087.11

Finding the Fourth Proportional to 22,158.87, 30,578.27 and 12,087.11

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Solution

The fourth proportional to 22,158.87, 30,578.27 and 12,087.11 is: 16,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,158.87 : 30,578.27 = 12,087.11 : x
  2. Step 2: Convert to fraction form
    22,158.87/30,578.27 = 12,087.11/x
  3. Step 3: Cross multiply
    22,158.87x = 30,578.27 × 12,087.11
  4. Step 4: Simplify right side
    22,158.87x = 369,602,699.77
  5. Step 5: Solve for x
    x = 369,602,699.77/22,158.87
  6. Step 6: Final answer
    x = 16,679.67

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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.