Home / 21,267.84-31,899.33-5,686.68

Finding the Fourth Proportional to 21,267.84, 31,899.33 and 5,686.68

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Solution

The fourth proportional to 21,267.84, 31,899.33 and 5,686.68 is: 8,529.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.84 : 31,899.33 = 5,686.68 : x
  2. Step 2: Convert to fraction form
    21,267.84/31,899.33 = 5,686.68/x
  3. Step 3: Cross multiply
    21,267.84x = 31,899.33 × 5,686.68
  4. Step 4: Simplify right side
    21,267.84x = 181,401,281.92
  5. Step 5: Solve for x
    x = 181,401,281.92/21,267.84
  6. Step 6: Final answer
    x = 8,529.37

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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.