Home / 21,300.16-29,385.84-14,231.20

Finding the Fourth Proportional to 21,300.16, 29,385.84 and 14,231.20

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Solution

The fourth proportional to 21,300.16, 29,385.84 and 14,231.20 is: 19,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.16 : 29,385.84 = 14,231.20 : x
  2. Step 2: Convert to fraction form
    21,300.16/29,385.84 = 14,231.20/x
  3. Step 3: Cross multiply
    21,300.16x = 29,385.84 × 14,231.20
  4. Step 4: Simplify right side
    21,300.16x = 418,195,766.21
  5. Step 5: Solve for x
    x = 418,195,766.21/21,300.16
  6. Step 6: Final answer
    x = 19,633.46

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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.