Home / 26,509.80-39,787.10-10,938.60

Finding the Fourth Proportional to 26,509.80, 39,787.10 and 10,938.60

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Solution

The fourth proportional to 26,509.80, 39,787.10 and 10,938.60 is: 16,417.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,509.80 : 39,787.10 = 10,938.60 : x
  2. Step 2: Convert to fraction form
    26,509.80/39,787.10 = 10,938.60/x
  3. Step 3: Cross multiply
    26,509.80x = 39,787.10 × 10,938.60
  4. Step 4: Simplify right side
    26,509.80x = 435,215,172.06
  5. Step 5: Solve for x
    x = 435,215,172.06/26,509.80
  6. Step 6: Final answer
    x = 16,417.14

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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.