Home / 21,020.11-31,525.61-8,536.89

Finding the Fourth Proportional to 21,020.11, 31,525.61 and 8,536.89

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Solution

The fourth proportional to 21,020.11, 31,525.61 and 8,536.89 is: 12,803.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.11 : 31,525.61 = 8,536.89 : x
  2. Step 2: Convert to fraction form
    21,020.11/31,525.61 = 8,536.89/x
  3. Step 3: Cross multiply
    21,020.11x = 31,525.61 × 8,536.89
  4. Step 4: Simplify right side
    21,020.11x = 269,130,740.29
  5. Step 5: Solve for x
    x = 269,130,740.29/21,020.11
  6. Step 6: Final answer
    x = 12,803.49

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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.