Home / 21,764.65-30,024.14-14,215.40

Finding the Fourth Proportional to 21,764.65, 30,024.14 and 14,215.40

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Solution

The fourth proportional to 21,764.65, 30,024.14 and 14,215.40 is: 19,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.65 : 30,024.14 = 14,215.40 : x
  2. Step 2: Convert to fraction form
    21,764.65/30,024.14 = 14,215.40/x
  3. Step 3: Cross multiply
    21,764.65x = 30,024.14 × 14,215.40
  4. Step 4: Simplify right side
    21,764.65x = 426,805,171.09
  5. Step 5: Solve for x
    x = 426,805,171.09/21,764.65
  6. Step 6: Final answer
    x = 19,610.02

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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.