Home / 12,904.28-19,368.30-7,983.53

Finding the Fourth Proportional to 12,904.28, 19,368.30 and 7,983.53

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Solution

The fourth proportional to 12,904.28, 19,368.30 and 7,983.53 is: 11,982.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.28 : 19,368.30 = 7,983.53 : x
  2. Step 2: Convert to fraction form
    12,904.28/19,368.30 = 7,983.53/x
  3. Step 3: Cross multiply
    12,904.28x = 19,368.30 × 7,983.53
  4. Step 4: Simplify right side
    12,904.28x = 154,627,404.10
  5. Step 5: Solve for x
    x = 154,627,404.10/12,904.28
  6. Step 6: Final answer
    x = 11,982.64

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1.5x scale

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.