Home / 18,693.90-28,052.51-12,458.28

Finding the Fourth Proportional to 18,693.90, 28,052.51 and 12,458.28

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Solution

The fourth proportional to 18,693.90, 28,052.51 and 12,458.28 is: 18,695.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.90 : 28,052.51 = 12,458.28 : x
  2. Step 2: Convert to fraction form
    18,693.90/28,052.51 = 12,458.28/x
  3. Step 3: Cross multiply
    18,693.90x = 28,052.51 × 12,458.28
  4. Step 4: Simplify right side
    18,693.90x = 349,485,961.99
  5. Step 5: Solve for x
    x = 349,485,961.99/18,693.90
  6. Step 6: Final answer
    x = 18,695.19

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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.