Home / 21,963.30-30,309.69-12,403.74

Finding the Fourth Proportional to 21,963.30, 30,309.69 and 12,403.74

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Solution

The fourth proportional to 21,963.30, 30,309.69 and 12,403.74 is: 17,117.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.30 : 30,309.69 = 12,403.74 : x
  2. Step 2: Convert to fraction form
    21,963.30/30,309.69 = 12,403.74/x
  3. Step 3: Cross multiply
    21,963.30x = 30,309.69 × 12,403.74
  4. Step 4: Simplify right side
    21,963.30x = 375,953,514.24
  5. Step 5: Solve for x
    x = 375,953,514.24/21,963.30
  6. Step 6: Final answer
    x = 17,117.35

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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.