Home / 14,221.16-19,621.86-8,631.08

Finding the Fourth Proportional to 14,221.16, 19,621.86 and 8,631.08

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Solution

The fourth proportional to 14,221.16, 19,621.86 and 8,631.08 is: 11,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.16 : 19,621.86 = 8,631.08 : x
  2. Step 2: Convert to fraction form
    14,221.16/19,621.86 = 8,631.08/x
  3. Step 3: Cross multiply
    14,221.16x = 19,621.86 × 8,631.08
  4. Step 4: Simplify right side
    14,221.16x = 169,357,843.41
  5. Step 5: Solve for x
    x = 169,357,843.41/14,221.16
  6. Step 6: Final answer
    x = 11,908.86

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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.