Home / 13,787.05-19,024.54-7,817.53

Finding the Fourth Proportional to 13,787.05, 19,024.54 and 7,817.53

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Solution

The fourth proportional to 13,787.05, 19,024.54 and 7,817.53 is: 10,787.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.05 : 19,024.54 = 7,817.53 : x
  2. Step 2: Convert to fraction form
    13,787.05/19,024.54 = 7,817.53/x
  3. Step 3: Cross multiply
    13,787.05x = 19,024.54 × 7,817.53
  4. Step 4: Simplify right side
    13,787.05x = 148,724,912.19
  5. Step 5: Solve for x
    x = 148,724,912.19/13,787.05
  6. Step 6: Final answer
    x = 10,787.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.