Home / 20,968.61-28,946.33-13,015.52

Finding the Fourth Proportional to 20,968.61, 28,946.33 and 13,015.52

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Solution

The fourth proportional to 20,968.61, 28,946.33 and 13,015.52 is: 17,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.61 : 28,946.33 = 13,015.52 : x
  2. Step 2: Convert to fraction form
    20,968.61/28,946.33 = 13,015.52/x
  3. Step 3: Cross multiply
    20,968.61x = 28,946.33 × 13,015.52
  4. Step 4: Simplify right side
    20,968.61x = 376,751,537.04
  5. Step 5: Solve for x
    x = 376,751,537.04/20,968.61
  6. Step 6: Final answer
    x = 17,967.41

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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.