Home / 28,640.32-42,973.23-11,111.51

Finding the Fourth Proportional to 28,640.32, 42,973.23 and 11,111.51

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Solution

The fourth proportional to 28,640.32, 42,973.23 and 11,111.51 is: 16,672.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.32 : 42,973.23 = 11,111.51 : x
  2. Step 2: Convert to fraction form
    28,640.32/42,973.23 = 11,111.51/x
  3. Step 3: Cross multiply
    28,640.32x = 42,973.23 × 11,111.51
  4. Step 4: Simplify right side
    28,640.32x = 477,497,474.88
  5. Step 5: Solve for x
    x = 477,497,474.88/28,640.32
  6. Step 6: Final answer
    x = 16,672.21

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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.