Home / 21,738.86-30,000.34-12,307.22

Finding the Fourth Proportional to 21,738.86, 30,000.34 and 12,307.22

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Solution

The fourth proportional to 21,738.86, 30,000.34 and 12,307.22 is: 16,984.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.86 : 30,000.34 = 12,307.22 : x
  2. Step 2: Convert to fraction form
    21,738.86/30,000.34 = 12,307.22/x
  3. Step 3: Cross multiply
    21,738.86x = 30,000.34 × 12,307.22
  4. Step 4: Simplify right side
    21,738.86x = 369,220,784.45
  5. Step 5: Solve for x
    x = 369,220,784.45/21,738.86
  6. Step 6: Final answer
    x = 16,984.37

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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.