Home / 21,890.07-32,838.55-7,849.78

Finding the Fourth Proportional to 21,890.07, 32,838.55 and 7,849.78

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Solution

The fourth proportional to 21,890.07, 32,838.55 and 7,849.78 is: 11,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.07 : 32,838.55 = 7,849.78 : x
  2. Step 2: Convert to fraction form
    21,890.07/32,838.55 = 7,849.78/x
  3. Step 3: Cross multiply
    21,890.07x = 32,838.55 × 7,849.78
  4. Step 4: Simplify right side
    21,890.07x = 257,775,291.30
  5. Step 5: Solve for x
    x = 257,775,291.30/21,890.07
  6. Step 6: Final answer
    x = 11,775.90

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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.