Home / 21,986.64-30,318.30-14,029.20

Finding the Fourth Proportional to 21,986.64, 30,318.30 and 14,029.20

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Solution

The fourth proportional to 21,986.64, 30,318.30 and 14,029.20 is: 19,345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.64 : 30,318.30 = 14,029.20 : x
  2. Step 2: Convert to fraction form
    21,986.64/30,318.30 = 14,029.20/x
  3. Step 3: Cross multiply
    21,986.64x = 30,318.30 × 14,029.20
  4. Step 4: Simplify right side
    21,986.64x = 425,341,494.36
  5. Step 5: Solve for x
    x = 425,341,494.36/21,986.64
  6. Step 6: Final answer
    x = 19,345.45

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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.