Home / 21,803.07-30,129.54-18,572.42

Finding the Fourth Proportional to 21,803.07, 30,129.54 and 18,572.42

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Solution

The fourth proportional to 21,803.07, 30,129.54 and 18,572.42 is: 25,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.07 : 30,129.54 = 18,572.42 : x
  2. Step 2: Convert to fraction form
    21,803.07/30,129.54 = 18,572.42/x
  3. Step 3: Cross multiply
    21,803.07x = 30,129.54 × 18,572.42
  4. Step 4: Simplify right side
    21,803.07x = 559,578,476.96
  5. Step 5: Solve for x
    x = 559,578,476.96/21,803.07
  6. Step 6: Final answer
    x = 25,665.12

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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.