Home / 28,721.36-43,056.12-19,960.40

Finding the Fourth Proportional to 28,721.36, 43,056.12 and 19,960.40

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Solution

The fourth proportional to 28,721.36, 43,056.12 and 19,960.40 is: 29,922.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.36 : 43,056.12 = 19,960.40 : x
  2. Step 2: Convert to fraction form
    28,721.36/43,056.12 = 19,960.40/x
  3. Step 3: Cross multiply
    28,721.36x = 43,056.12 × 19,960.40
  4. Step 4: Simplify right side
    28,721.36x = 859,417,377.65
  5. Step 5: Solve for x
    x = 859,417,377.65/28,721.36
  6. Step 6: Final answer
    x = 29,922.59

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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.