Home / 20,609.86-28,445.16-11,660.14

Finding the Fourth Proportional to 20,609.86, 28,445.16 and 11,660.14

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Solution

The fourth proportional to 20,609.86, 28,445.16 and 11,660.14 is: 16,093.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.86 : 28,445.16 = 11,660.14 : x
  2. Step 2: Convert to fraction form
    20,609.86/28,445.16 = 11,660.14/x
  3. Step 3: Cross multiply
    20,609.86x = 28,445.16 × 11,660.14
  4. Step 4: Simplify right side
    20,609.86x = 331,674,547.92
  5. Step 5: Solve for x
    x = 331,674,547.92/20,609.86
  6. Step 6: Final answer
    x = 16,093.00

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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.