Home / 21,975.90-30,326.84-11,904.32

Finding the Fourth Proportional to 21,975.90, 30,326.84 and 11,904.32

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Solution

The fourth proportional to 21,975.90, 30,326.84 and 11,904.32 is: 16,428.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.90 : 30,326.84 = 11,904.32 : x
  2. Step 2: Convert to fraction form
    21,975.90/30,326.84 = 11,904.32/x
  3. Step 3: Cross multiply
    21,975.90x = 30,326.84 × 11,904.32
  4. Step 4: Simplify right side
    21,975.90x = 361,020,196.79
  5. Step 5: Solve for x
    x = 361,020,196.79/21,975.90
  6. Step 6: Final answer
    x = 16,428.01

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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.