Home / 21,824.40-30,117.71-12,392.96

Finding the Fourth Proportional to 21,824.40, 30,117.71 and 12,392.96

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Solution

The fourth proportional to 21,824.40, 30,117.71 and 12,392.96 is: 17,102.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.40 : 30,117.71 = 12,392.96 : x
  2. Step 2: Convert to fraction form
    21,824.40/30,117.71 = 12,392.96/x
  3. Step 3: Cross multiply
    21,824.40x = 30,117.71 × 12,392.96
  4. Step 4: Simplify right side
    21,824.40x = 373,247,575.32
  5. Step 5: Solve for x
    x = 373,247,575.32/21,824.40
  6. Step 6: Final answer
    x = 17,102.31

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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.