Home / 19,428.30-26,796.70-13,380.46

Finding the Fourth Proportional to 19,428.30, 26,796.70 and 13,380.46

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Solution

The fourth proportional to 19,428.30, 26,796.70 and 13,380.46 is: 18,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.30 : 26,796.70 = 13,380.46 : x
  2. Step 2: Convert to fraction form
    19,428.30/26,796.70 = 13,380.46/x
  3. Step 3: Cross multiply
    19,428.30x = 26,796.70 × 13,380.46
  4. Step 4: Simplify right side
    19,428.30x = 358,552,172.48
  5. Step 5: Solve for x
    x = 358,552,172.48/19,428.30
  6. Step 6: Final answer
    x = 18,455.15

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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.