Home / 28,423.52-42,628.32-12,619.84

Finding the Fourth Proportional to 28,423.52, 42,628.32 and 12,619.84

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Solution

The fourth proportional to 28,423.52, 42,628.32 and 12,619.84 is: 18,926.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.52 : 42,628.32 = 12,619.84 : x
  2. Step 2: Convert to fraction form
    28,423.52/42,628.32 = 12,619.84/x
  3. Step 3: Cross multiply
    28,423.52x = 42,628.32 × 12,619.84
  4. Step 4: Simplify right side
    28,423.52x = 537,962,577.87
  5. Step 5: Solve for x
    x = 537,962,577.87/28,423.52
  6. Step 6: Final answer
    x = 18,926.67

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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.