Home / 21,621-29,836.98-15,000.84

Finding the Fourth Proportional to 21,621, 29,836.98 and 15,000.84

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Solution

The fourth proportional to 21,621, 29,836.98 and 15,000.84 is: 20,701.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621 : 29,836.98 = 15,000.84 : x
  2. Step 2: Convert to fraction form
    21,621/29,836.98 = 15,000.84/x
  3. Step 3: Cross multiply
    21,621x = 29,836.98 × 15,000.84
  4. Step 4: Simplify right side
    21,621x = 447,579,763.06
  5. Step 5: Solve for x
    x = 447,579,763.06/21,621
  6. Step 6: Final answer
    x = 20,701.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.