Home / 28,313.24-42,469.86-12,712.64

Finding the Fourth Proportional to 28,313.24, 42,469.86 and 12,712.64

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Solution

The fourth proportional to 28,313.24, 42,469.86 and 12,712.64 is: 19,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.24 : 42,469.86 = 12,712.64 : x
  2. Step 2: Convert to fraction form
    28,313.24/42,469.86 = 12,712.64/x
  3. Step 3: Cross multiply
    28,313.24x = 42,469.86 × 12,712.64
  4. Step 4: Simplify right side
    28,313.24x = 539,904,041.03
  5. Step 5: Solve for x
    x = 539,904,041.03/28,313.24
  6. Step 6: Final answer
    x = 19,068.96

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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.