Home / 21,946.07-30,286.10-12,515.51

Finding the Fourth Proportional to 21,946.07, 30,286.10 and 12,515.51

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Solution

The fourth proportional to 21,946.07, 30,286.10 and 12,515.51 is: 17,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,946.07 : 30,286.10 = 12,515.51 : x
  2. Step 2: Convert to fraction form
    21,946.07/30,286.10 = 12,515.51/x
  3. Step 3: Cross multiply
    21,946.07x = 30,286.10 × 12,515.51
  4. Step 4: Simplify right side
    21,946.07x = 379,045,987.41
  5. Step 5: Solve for x
    x = 379,045,987.41/21,946.07
  6. Step 6: Final answer
    x = 17,271.70

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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.