Home / 31,999.20-47,998.80-23,186.40

Finding the Fourth Proportional to 31,999.20, 47,998.80 and 23,186.40

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Solution

The fourth proportional to 31,999.20, 47,998.80 and 23,186.40 is: 34,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,999.20 : 47,998.80 = 23,186.40 : x
  2. Step 2: Convert to fraction form
    31,999.20/47,998.80 = 23,186.40/x
  3. Step 3: Cross multiply
    31,999.20x = 47,998.80 × 23,186.40
  4. Step 4: Simplify right side
    31,999.20x = 1,112,919,376.32
  5. Step 5: Solve for x
    x = 1,112,919,376.32/31,999.20
  6. Step 6: Final answer
    x = 34,779.60

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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.