Home / 21,740.04-30,001.68-13,356.54

Finding the Fourth Proportional to 21,740.04, 30,001.68 and 13,356.54

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Solution

The fourth proportional to 21,740.04, 30,001.68 and 13,356.54 is: 18,432.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.04 : 30,001.68 = 13,356.54 : x
  2. Step 2: Convert to fraction form
    21,740.04/30,001.68 = 13,356.54/x
  3. Step 3: Cross multiply
    21,740.04x = 30,001.68 × 13,356.54
  4. Step 4: Simplify right side
    21,740.04x = 400,718,638.99
  5. Step 5: Solve for x
    x = 400,718,638.99/21,740.04
  6. Step 6: Final answer
    x = 18,432.29

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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.