Home / 28,639.32-42,971.73-11,110.51

Finding the Fourth Proportional to 28,639.32, 42,971.73 and 11,110.51

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Solution

The fourth proportional to 28,639.32, 42,971.73 and 11,110.51 is: 16,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.32 : 42,971.73 = 11,110.51 : x
  2. Step 2: Convert to fraction form
    28,639.32/42,971.73 = 11,110.51/x
  3. Step 3: Cross multiply
    28,639.32x = 42,971.73 × 11,110.51
  4. Step 4: Simplify right side
    28,639.32x = 477,437,835.88
  5. Step 5: Solve for x
    x = 477,437,835.88/28,639.32
  6. Step 6: Final answer
    x = 16,670.71

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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.