Home / 21,905.04-30,198.40-18,516.08

Finding the Fourth Proportional to 21,905.04, 30,198.40 and 18,516.08

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Solution

The fourth proportional to 21,905.04, 30,198.40 and 18,516.08 is: 25,526.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.04 : 30,198.40 = 18,516.08 : x
  2. Step 2: Convert to fraction form
    21,905.04/30,198.40 = 18,516.08/x
  3. Step 3: Cross multiply
    21,905.04x = 30,198.40 × 18,516.08
  4. Step 4: Simplify right side
    21,905.04x = 559,155,990.27
  5. Step 5: Solve for x
    x = 559,155,990.27/21,905.04
  6. Step 6: Final answer
    x = 25,526.36

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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.