Home / 30,947.40-46,415.70-11,215.80

Finding the Fourth Proportional to 30,947.40, 46,415.70 and 11,215.80

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Solution

The fourth proportional to 30,947.40, 46,415.70 and 11,215.80 is: 16,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,947.40 : 46,415.70 = 11,215.80 : x
  2. Step 2: Convert to fraction form
    30,947.40/46,415.70 = 11,215.80/x
  3. Step 3: Cross multiply
    30,947.40x = 46,415.70 × 11,215.80
  4. Step 4: Simplify right side
    30,947.40x = 520,589,208.06
  5. Step 5: Solve for x
    x = 520,589,208.06/30,947.40
  6. Step 6: Final answer
    x = 16,821.74

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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.