Home / 21,748.07-30,011.33-12,316.70

Finding the Fourth Proportional to 21,748.07, 30,011.33 and 12,316.70

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Solution

The fourth proportional to 21,748.07, 30,011.33 and 12,316.70 is: 16,996.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.07 : 30,011.33 = 12,316.70 : x
  2. Step 2: Convert to fraction form
    21,748.07/30,011.33 = 12,316.70/x
  3. Step 3: Cross multiply
    21,748.07x = 30,011.33 × 12,316.70
  4. Step 4: Simplify right side
    21,748.07x = 369,640,548.21
  5. Step 5: Solve for x
    x = 369,640,548.21/21,748.07
  6. Step 6: Final answer
    x = 16,996.48

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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.