Home / 30,355.76-45,539.40-13,715.60

Finding the Fourth Proportional to 30,355.76, 45,539.40 and 13,715.60

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Solution

The fourth proportional to 30,355.76, 45,539.40 and 13,715.60 is: 20,576.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,355.76 : 45,539.40 = 13,715.60 : x
  2. Step 2: Convert to fraction form
    30,355.76/45,539.40 = 13,715.60/x
  3. Step 3: Cross multiply
    30,355.76x = 45,539.40 × 13,715.60
  4. Step 4: Simplify right side
    30,355.76x = 624,600,194.64
  5. Step 5: Solve for x
    x = 624,600,194.64/30,355.76
  6. Step 6: Final answer
    x = 20,576.00

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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.