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Finding the Fourth Proportional to 10,751.88, 16,129.71 and 4,909.08

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Solution

The fourth proportional to 10,751.88, 16,129.71 and 4,909.08 is: 7,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,751.88 : 16,129.71 = 4,909.08 : x
  2. Step 2: Convert to fraction form
    10,751.88/16,129.71 = 4,909.08/x
  3. Step 3: Cross multiply
    10,751.88x = 16,129.71 × 4,909.08
  4. Step 4: Simplify right side
    10,751.88x = 79,182,036.77
  5. Step 5: Solve for x
    x = 79,182,036.77/10,751.88
  6. Step 6: Final answer
    x = 7,364.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.