Home / 28,113.46-38,804.64-18,560.32

Finding the Fourth Proportional to 28,113.46, 38,804.64 and 18,560.32

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Solution

The fourth proportional to 28,113.46, 38,804.64 and 18,560.32 is: 25,618.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.46 : 38,804.64 = 18,560.32 : x
  2. Step 2: Convert to fraction form
    28,113.46/38,804.64 = 18,560.32/x
  3. Step 3: Cross multiply
    28,113.46x = 38,804.64 × 18,560.32
  4. Step 4: Simplify right side
    28,113.46x = 720,226,535.88
  5. Step 5: Solve for x
    x = 720,226,535.88/28,113.46
  6. Step 6: Final answer
    x = 25,618.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.