Home / 28,454.32-42,685.80-9,982

Finding the Fourth Proportional to 28,454.32, 42,685.80 and 9,982

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Solution

The fourth proportional to 28,454.32, 42,685.80 and 9,982 is: 14,974.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.32 : 42,685.80 = 9,982 : x
  2. Step 2: Convert to fraction form
    28,454.32/42,685.80 = 9,982/x
  3. Step 3: Cross multiply
    28,454.32x = 42,685.80 × 9,982
  4. Step 4: Simplify right side
    28,454.32x = 426,089,655.60
  5. Step 5: Solve for x
    x = 426,089,655.60/28,454.32
  6. Step 6: Final answer
    x = 14,974.52

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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.