Home / 21,938.06-32,898.90-7,894.28

Finding the Fourth Proportional to 21,938.06, 32,898.90 and 7,894.28

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Solution

The fourth proportional to 21,938.06, 32,898.90 and 7,894.28 is: 11,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.06 : 32,898.90 = 7,894.28 : x
  2. Step 2: Convert to fraction form
    21,938.06/32,898.90 = 7,894.28/x
  3. Step 3: Cross multiply
    21,938.06x = 32,898.90 × 7,894.28
  4. Step 4: Simplify right side
    21,938.06x = 259,713,128.29
  5. Step 5: Solve for x
    x = 259,713,128.29/21,938.06
  6. Step 6: Final answer
    x = 11,838.47

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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.