Home / 21,785.12-30,021.30-14,699.24

Finding the Fourth Proportional to 21,785.12, 30,021.30 and 14,699.24

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Solution

The fourth proportional to 21,785.12, 30,021.30 and 14,699.24 is: 20,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.12 : 30,021.30 = 14,699.24 : x
  2. Step 2: Convert to fraction form
    21,785.12/30,021.30 = 14,699.24/x
  3. Step 3: Cross multiply
    21,785.12x = 30,021.30 × 14,699.24
  4. Step 4: Simplify right side
    21,785.12x = 441,290,293.81
  5. Step 5: Solve for x
    x = 441,290,293.81/21,785.12
  6. Step 6: Final answer
    x = 20,256.50

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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.