Home / 21,751.26-29,988.18-15,696.42

Finding the Fourth Proportional to 21,751.26, 29,988.18 and 15,696.42

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Solution

The fourth proportional to 21,751.26, 29,988.18 and 15,696.42 is: 21,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.26 : 29,988.18 = 15,696.42 : x
  2. Step 2: Convert to fraction form
    21,751.26/29,988.18 = 15,696.42/x
  3. Step 3: Cross multiply
    21,751.26x = 29,988.18 × 15,696.42
  4. Step 4: Simplify right side
    21,751.26x = 470,707,068.32
  5. Step 5: Solve for x
    x = 470,707,068.32/21,751.26
  6. Step 6: Final answer
    x = 21,640.45

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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.