Home / 13,789.64-19,028.04-7,821.02

Finding the Fourth Proportional to 13,789.64, 19,028.04 and 7,821.02

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Solution

The fourth proportional to 13,789.64, 19,028.04 and 7,821.02 is: 10,792.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.64 : 19,028.04 = 7,821.02 : x
  2. Step 2: Convert to fraction form
    13,789.64/19,028.04 = 7,821.02/x
  3. Step 3: Cross multiply
    13,789.64x = 19,028.04 × 7,821.02
  4. Step 4: Simplify right side
    13,789.64x = 148,818,681.40
  5. Step 5: Solve for x
    x = 148,818,681.40/13,789.64
  6. Step 6: Final answer
    x = 10,792.06

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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.