Home / 19,988.48-30,007.56-12,945.44

Finding the Fourth Proportional to 19,988.48, 30,007.56 and 12,945.44

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Solution

The fourth proportional to 19,988.48, 30,007.56 and 12,945.44 is: 19,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.48 : 30,007.56 = 12,945.44 : x
  2. Step 2: Convert to fraction form
    19,988.48/30,007.56 = 12,945.44/x
  3. Step 3: Cross multiply
    19,988.48x = 30,007.56 × 12,945.44
  4. Step 4: Simplify right side
    19,988.48x = 388,461,067.53
  5. Step 5: Solve for x
    x = 388,461,067.53/19,988.48
  6. Step 6: Final answer
    x = 19,434.25

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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.