Home / 28,448.91-42,670.53-20,588.67

Finding the Fourth Proportional to 28,448.91, 42,670.53 and 20,588.67

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Solution

The fourth proportional to 28,448.91, 42,670.53 and 20,588.67 is: 30,880.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,448.91 : 42,670.53 = 20,588.67 : x
  2. Step 2: Convert to fraction form
    28,448.91/42,670.53 = 20,588.67/x
  3. Step 3: Cross multiply
    28,448.91x = 42,670.53 × 20,588.67
  4. Step 4: Simplify right side
    28,448.91x = 878,529,460.90
  5. Step 5: Solve for x
    x = 878,529,460.90/28,448.91
  6. Step 6: Final answer
    x = 30,880.95

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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.