Home / 21,684.18-29,913.20-14,514.40

Finding the Fourth Proportional to 21,684.18, 29,913.20 and 14,514.40

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Solution

The fourth proportional to 21,684.18, 29,913.20 and 14,514.40 is: 20,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.18 : 29,913.20 = 14,514.40 : x
  2. Step 2: Convert to fraction form
    21,684.18/29,913.20 = 14,514.40/x
  3. Step 3: Cross multiply
    21,684.18x = 29,913.20 × 14,514.40
  4. Step 4: Simplify right side
    21,684.18x = 434,172,000.51
  5. Step 5: Solve for x
    x = 434,172,000.51/21,684.18
  6. Step 6: Final answer
    x = 20,022.52

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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.