Home / 18,670.77-28,023.75-12,435.15

Finding the Fourth Proportional to 18,670.77, 28,023.75 and 12,435.15

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Solution

The fourth proportional to 18,670.77, 28,023.75 and 12,435.15 is: 18,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.77 : 28,023.75 = 12,435.15 : x
  2. Step 2: Convert to fraction form
    18,670.77/28,023.75 = 12,435.15/x
  3. Step 3: Cross multiply
    18,670.77x = 28,023.75 × 12,435.15
  4. Step 4: Simplify right side
    18,670.77x = 348,479,534.81
  5. Step 5: Solve for x
    x = 348,479,534.81/18,670.77
  6. Step 6: Final answer
    x = 18,664.44

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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.