Home / 21,748.32-30,015.36-12,316.68

Finding the Fourth Proportional to 21,748.32, 30,015.36 and 12,316.68

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Solution

The fourth proportional to 21,748.32, 30,015.36 and 12,316.68 is: 16,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.32 : 30,015.36 = 12,316.68 : x
  2. Step 2: Convert to fraction form
    21,748.32/30,015.36 = 12,316.68/x
  3. Step 3: Cross multiply
    21,748.32x = 30,015.36 × 12,316.68
  4. Step 4: Simplify right side
    21,748.32x = 369,689,584.20
  5. Step 5: Solve for x
    x = 369,689,584.20/21,748.32
  6. Step 6: Final answer
    x = 16,998.54

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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.