Home / 28,007.49-38,637.75-18,929.94

Finding the Fourth Proportional to 28,007.49, 38,637.75 and 18,929.94

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Solution

The fourth proportional to 28,007.49, 38,637.75 and 18,929.94 is: 26,114.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.49 : 38,637.75 = 18,929.94 : x
  2. Step 2: Convert to fraction form
    28,007.49/38,637.75 = 18,929.94/x
  3. Step 3: Cross multiply
    28,007.49x = 38,637.75 × 18,929.94
  4. Step 4: Simplify right side
    28,007.49x = 731,410,289.24
  5. Step 5: Solve for x
    x = 731,410,289.24/28,007.49
  6. Step 6: Final answer
    x = 26,114.81

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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.