Home / 21,948.48-30,085.60-21,653.12

Finding the Fourth Proportional to 21,948.48, 30,085.60 and 21,653.12

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Solution

The fourth proportional to 21,948.48, 30,085.60 and 21,653.12 is: 29,680.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.48 : 30,085.60 = 21,653.12 : x
  2. Step 2: Convert to fraction form
    21,948.48/30,085.60 = 21,653.12/x
  3. Step 3: Cross multiply
    21,948.48x = 30,085.60 × 21,653.12
  4. Step 4: Simplify right side
    21,948.48x = 651,447,107.07
  5. Step 5: Solve for x
    x = 651,447,107.07/21,948.48
  6. Step 6: Final answer
    x = 29,680.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.