Home / 65,428.64-98,140.96-18,681.60

Finding the Fourth Proportional to 65,428.64, 98,140.96 and 18,681.60

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Solution

The fourth proportional to 65,428.64, 98,140.96 and 18,681.60 is: 28,021.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,428.64 : 98,140.96 = 18,681.60 : x
  2. Step 2: Convert to fraction form
    65,428.64/98,140.96 = 18,681.60/x
  3. Step 3: Cross multiply
    65,428.64x = 98,140.96 × 18,681.60
  4. Step 4: Simplify right side
    65,428.64x = 1,833,430,158.34
  5. Step 5: Solve for x
    x = 1,833,430,158.34/65,428.64
  6. Step 6: Final answer
    x = 28,021.83

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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.