Home / 21,870.66-30,170.43-14,329.62

Finding the Fourth Proportional to 21,870.66, 30,170.43 and 14,329.62

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Solution

The fourth proportional to 21,870.66, 30,170.43 and 14,329.62 is: 19,767.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870.66 : 30,170.43 = 14,329.62 : x
  2. Step 2: Convert to fraction form
    21,870.66/30,170.43 = 14,329.62/x
  3. Step 3: Cross multiply
    21,870.66x = 30,170.43 × 14,329.62
  4. Step 4: Simplify right side
    21,870.66x = 432,330,797.14
  5. Step 5: Solve for x
    x = 432,330,797.14/21,870.66
  6. Step 6: Final answer
    x = 19,767.62

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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.