Home / 13,621.52-20,349.48-8,651.36

Finding the Fourth Proportional to 13,621.52, 20,349.48 and 8,651.36

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Solution

The fourth proportional to 13,621.52, 20,349.48 and 8,651.36 is: 12,924.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.52 : 20,349.48 = 8,651.36 : x
  2. Step 2: Convert to fraction form
    13,621.52/20,349.48 = 8,651.36/x
  3. Step 3: Cross multiply
    13,621.52x = 20,349.48 × 8,651.36
  4. Step 4: Simplify right side
    13,621.52x = 176,050,677.29
  5. Step 5: Solve for x
    x = 176,050,677.29/13,621.52
  6. Step 6: Final answer
    x = 12,924.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.