Home / 28,938.40-43,407.60-15,816.40

Finding the Fourth Proportional to 28,938.40, 43,407.60 and 15,816.40

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Solution

The fourth proportional to 28,938.40, 43,407.60 and 15,816.40 is: 23,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.40 : 43,407.60 = 15,816.40 : x
  2. Step 2: Convert to fraction form
    28,938.40/43,407.60 = 15,816.40/x
  3. Step 3: Cross multiply
    28,938.40x = 43,407.60 × 15,816.40
  4. Step 4: Simplify right side
    28,938.40x = 686,551,964.64
  5. Step 5: Solve for x
    x = 686,551,964.64/28,938.40
  6. Step 6: Final answer
    x = 23,724.60

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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.