Home / 18,999.60-28,499.40-7,153.35

Finding the Fourth Proportional to 18,999.60, 28,499.40 and 7,153.35

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Solution

The fourth proportional to 18,999.60, 28,499.40 and 7,153.35 is: 10,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.60 : 28,499.40 = 7,153.35 : x
  2. Step 2: Convert to fraction form
    18,999.60/28,499.40 = 7,153.35/x
  3. Step 3: Cross multiply
    18,999.60x = 28,499.40 × 7,153.35
  4. Step 4: Simplify right side
    18,999.60x = 203,866,182.99
  5. Step 5: Solve for x
    x = 203,866,182.99/18,999.60
  6. Step 6: Final answer
    x = 10,730.03

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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.