Home / 21,898.08-30,201.12-16,234.56

Finding the Fourth Proportional to 21,898.08, 30,201.12 and 16,234.56

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Solution

The fourth proportional to 21,898.08, 30,201.12 and 16,234.56 is: 22,390.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.08 : 30,201.12 = 16,234.56 : x
  2. Step 2: Convert to fraction form
    21,898.08/30,201.12 = 16,234.56/x
  3. Step 3: Cross multiply
    21,898.08x = 30,201.12 × 16,234.56
  4. Step 4: Simplify right side
    21,898.08x = 490,301,894.71
  5. Step 5: Solve for x
    x = 490,301,894.71/21,898.08
  6. Step 6: Final answer
    x = 22,390.18

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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.