Home / 21,908.07-30,225.02-15,199.65

Finding the Fourth Proportional to 21,908.07, 30,225.02 and 15,199.65

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Solution

The fourth proportional to 21,908.07, 30,225.02 and 15,199.65 is: 20,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.07 : 30,225.02 = 15,199.65 : x
  2. Step 2: Convert to fraction form
    21,908.07/30,225.02 = 15,199.65/x
  3. Step 3: Cross multiply
    21,908.07x = 30,225.02 × 15,199.65
  4. Step 4: Simplify right side
    21,908.07x = 459,409,649.24
  5. Step 5: Solve for x
    x = 459,409,649.24/21,908.07
  6. Step 6: Final answer
    x = 20,969.88

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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.