Home / 28,938.47-43,396.65-10,215

Finding the Fourth Proportional to 28,938.47, 43,396.65 and 10,215

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Solution

The fourth proportional to 28,938.47, 43,396.65 and 10,215 is: 15,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.47 : 43,396.65 = 10,215 : x
  2. Step 2: Convert to fraction form
    28,938.47/43,396.65 = 10,215/x
  3. Step 3: Cross multiply
    28,938.47x = 43,396.65 × 10,215
  4. Step 4: Simplify right side
    28,938.47x = 443,296,779.75
  5. Step 5: Solve for x
    x = 443,296,779.75/28,938.47
  6. Step 6: Final answer
    x = 15,318.60

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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.