Home / 30,905.10-46,357.65-21,391.65

Finding the Fourth Proportional to 30,905.10, 46,357.65 and 21,391.65

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Solution

The fourth proportional to 30,905.10, 46,357.65 and 21,391.65 is: 32,087.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.10 : 46,357.65 = 21,391.65 : x
  2. Step 2: Convert to fraction form
    30,905.10/46,357.65 = 21,391.65/x
  3. Step 3: Cross multiply
    30,905.10x = 46,357.65 × 21,391.65
  4. Step 4: Simplify right side
    30,905.10x = 991,666,623.62
  5. Step 5: Solve for x
    x = 991,666,623.62/30,905.10
  6. Step 6: Final answer
    x = 32,087.48

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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.