Home / 30,999.60-46,499.40-18,533.70

Finding the Fourth Proportional to 30,999.60, 46,499.40 and 18,533.70

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Solution

The fourth proportional to 30,999.60, 46,499.40 and 18,533.70 is: 27,800.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,999.60 : 46,499.40 = 18,533.70 : x
  2. Step 2: Convert to fraction form
    30,999.60/46,499.40 = 18,533.70/x
  3. Step 3: Cross multiply
    30,999.60x = 46,499.40 × 18,533.70
  4. Step 4: Simplify right side
    30,999.60x = 861,805,929.78
  5. Step 5: Solve for x
    x = 861,805,929.78/30,999.60
  6. Step 6: Final answer
    x = 27,800.55

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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.