Home / 15,756.86-21,714.55-11,272.84

Finding the Fourth Proportional to 15,756.86, 21,714.55 and 11,272.84

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Solution

The fourth proportional to 15,756.86, 21,714.55 and 11,272.84 is: 15,535.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.86 : 21,714.55 = 11,272.84 : x
  2. Step 2: Convert to fraction form
    15,756.86/21,714.55 = 11,272.84/x
  3. Step 3: Cross multiply
    15,756.86x = 21,714.55 × 11,272.84
  4. Step 4: Simplify right side
    15,756.86x = 244,784,565.35
  5. Step 5: Solve for x
    x = 244,784,565.35/15,756.86
  6. Step 6: Final answer
    x = 15,535.11

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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.