Home / 19,315.60-28,951.80-10,999.60

Finding the Fourth Proportional to 19,315.60, 28,951.80 and 10,999.60

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Solution

The fourth proportional to 19,315.60, 28,951.80 and 10,999.60 is: 16,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315.60 : 28,951.80 = 10,999.60 : x
  2. Step 2: Convert to fraction form
    19,315.60/28,951.80 = 10,999.60/x
  3. Step 3: Cross multiply
    19,315.60x = 28,951.80 × 10,999.60
  4. Step 4: Simplify right side
    19,315.60x = 318,458,219.28
  5. Step 5: Solve for x
    x = 318,458,219.28/19,315.60
  6. Step 6: Final answer
    x = 16,487.10

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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.