Home / 21,809.10-30,066.32-14,724.30

Finding the Fourth Proportional to 21,809.10, 30,066.32 and 14,724.30

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Solution

The fourth proportional to 21,809.10, 30,066.32 and 14,724.30 is: 20,299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.10 : 30,066.32 = 14,724.30 : x
  2. Step 2: Convert to fraction form
    21,809.10/30,066.32 = 14,724.30/x
  3. Step 3: Cross multiply
    21,809.10x = 30,066.32 × 14,724.30
  4. Step 4: Simplify right side
    21,809.10x = 442,705,515.58
  5. Step 5: Solve for x
    x = 442,705,515.58/21,809.10
  6. Step 6: Final answer
    x = 20,299.12

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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.