Home / 15,770.41-21,740.56-12,407.40

Finding the Fourth Proportional to 15,770.41, 21,740.56 and 12,407.40

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Solution

The fourth proportional to 15,770.41, 21,740.56 and 12,407.40 is: 17,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,770.41 : 21,740.56 = 12,407.40 : x
  2. Step 2: Convert to fraction form
    15,770.41/21,740.56 = 12,407.40/x
  3. Step 3: Cross multiply
    15,770.41x = 21,740.56 × 12,407.40
  4. Step 4: Simplify right side
    15,770.41x = 269,743,824.14
  5. Step 5: Solve for x
    x = 269,743,824.14/15,770.41
  6. Step 6: Final answer
    x = 17,104.43

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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.