Home / 15,253.91-21,050.39-8,539.55

Finding the Fourth Proportional to 15,253.91, 21,050.39 and 8,539.55

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Solution

The fourth proportional to 15,253.91, 21,050.39 and 8,539.55 is: 11,784.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,253.91 : 21,050.39 = 8,539.55 : x
  2. Step 2: Convert to fraction form
    15,253.91/21,050.39 = 8,539.55/x
  3. Step 3: Cross multiply
    15,253.91x = 21,050.39 × 8,539.55
  4. Step 4: Simplify right side
    15,253.91x = 179,760,774.02
  5. Step 5: Solve for x
    x = 179,760,774.02/15,253.91
  6. Step 6: Final answer
    x = 11,784.57

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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.