Home / 21,967.65-30,315.20-11,895.95

Finding the Fourth Proportional to 21,967.65, 30,315.20 and 11,895.95

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Solution

The fourth proportional to 21,967.65, 30,315.20 and 11,895.95 is: 16,416.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.65 : 30,315.20 = 11,895.95 : x
  2. Step 2: Convert to fraction form
    21,967.65/30,315.20 = 11,895.95/x
  3. Step 3: Cross multiply
    21,967.65x = 30,315.20 × 11,895.95
  4. Step 4: Simplify right side
    21,967.65x = 360,627,951.86
  5. Step 5: Solve for x
    x = 360,627,951.86/21,967.65
  6. Step 6: Final answer
    x = 16,416.32

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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.