Home / 21,913.75-30,240.98-11,842.16

Finding the Fourth Proportional to 21,913.75, 30,240.98 and 11,842.16

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Solution

The fourth proportional to 21,913.75, 30,240.98 and 11,842.16 is: 16,342.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.75 : 30,240.98 = 11,842.16 : x
  2. Step 2: Convert to fraction form
    21,913.75/30,240.98 = 11,842.16/x
  3. Step 3: Cross multiply
    21,913.75x = 30,240.98 × 11,842.16
  4. Step 4: Simplify right side
    21,913.75x = 358,118,523.72
  5. Step 5: Solve for x
    x = 358,118,523.72/21,913.75
  6. Step 6: Final answer
    x = 16,342.18

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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.