Home / 21,747.34-30,011.40-12,317.68

Finding the Fourth Proportional to 21,747.34, 30,011.40 and 12,317.68

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Solution

The fourth proportional to 21,747.34, 30,011.40 and 12,317.68 is: 16,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.34 : 30,011.40 = 12,317.68 : x
  2. Step 2: Convert to fraction form
    21,747.34/30,011.40 = 12,317.68/x
  3. Step 3: Cross multiply
    21,747.34x = 30,011.40 × 12,317.68
  4. Step 4: Simplify right side
    21,747.34x = 369,670,821.55
  5. Step 5: Solve for x
    x = 369,670,821.55/21,747.34
  6. Step 6: Final answer
    x = 16,998.44

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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.