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Finding the Fourth Proportional to 15,106.88, 20,855.01 and 9,444.77

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Solution

The fourth proportional to 15,106.88, 20,855.01 and 9,444.77 is: 13,038.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.88 : 20,855.01 = 9,444.77 : x
  2. Step 2: Convert to fraction form
    15,106.88/20,855.01 = 9,444.77/x
  3. Step 3: Cross multiply
    15,106.88x = 20,855.01 × 9,444.77
  4. Step 4: Simplify right side
    15,106.88x = 196,970,668.52
  5. Step 5: Solve for x
    x = 196,970,668.52/15,106.88
  6. Step 6: Final answer
    x = 13,038.48

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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.