Home / 21,075.92-31,610.37-6,281.37

Finding the Fourth Proportional to 21,075.92, 31,610.37 and 6,281.37

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Solution

The fourth proportional to 21,075.92, 31,610.37 and 6,281.37 is: 9,421.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.92 : 31,610.37 = 6,281.37 : x
  2. Step 2: Convert to fraction form
    21,075.92/31,610.37 = 6,281.37/x
  3. Step 3: Cross multiply
    21,075.92x = 31,610.37 × 6,281.37
  4. Step 4: Simplify right side
    21,075.92x = 198,556,271.76
  5. Step 5: Solve for x
    x = 198,556,271.76/21,075.92
  6. Step 6: Final answer
    x = 9,421.00

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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.