Home / 28,416.96-42,660.72-18,937.44

Finding the Fourth Proportional to 28,416.96, 42,660.72 and 18,937.44

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Solution

The fourth proportional to 28,416.96, 42,660.72 and 18,937.44 is: 28,429.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.96 : 42,660.72 = 18,937.44 : x
  2. Step 2: Convert to fraction form
    28,416.96/42,660.72 = 18,937.44/x
  3. Step 3: Cross multiply
    28,416.96x = 42,660.72 × 18,937.44
  4. Step 4: Simplify right side
    28,416.96x = 807,884,825.36
  5. Step 5: Solve for x
    x = 807,884,825.36/28,416.96
  6. Step 6: Final answer
    x = 28,429.67

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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.