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Finding the Fourth Proportional to 15,131.58, 20,894.79 and 10,177.98

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Solution

The fourth proportional to 15,131.58, 20,894.79 and 10,177.98 is: 14,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.58 : 20,894.79 = 10,177.98 : x
  2. Step 2: Convert to fraction form
    15,131.58/20,894.79 = 10,177.98/x
  3. Step 3: Cross multiply
    15,131.58x = 20,894.79 × 10,177.98
  4. Step 4: Simplify right side
    15,131.58x = 212,666,754.72
  5. Step 5: Solve for x
    x = 212,666,754.72/15,131.58
  6. Step 6: Final answer
    x = 14,054.50

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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.