Home / 28,763.32-39,678.16-19,795.25

Finding the Fourth Proportional to 28,763.32, 39,678.16 and 19,795.25

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Solution

The fourth proportional to 28,763.32, 39,678.16 and 19,795.25 is: 27,306.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763.32 : 39,678.16 = 19,795.25 : x
  2. Step 2: Convert to fraction form
    28,763.32/39,678.16 = 19,795.25/x
  3. Step 3: Cross multiply
    28,763.32x = 39,678.16 × 19,795.25
  4. Step 4: Simplify right side
    28,763.32x = 785,439,281.18
  5. Step 5: Solve for x
    x = 785,439,281.18/28,763.32
  6. Step 6: Final answer
    x = 27,306.97

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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.