Home / 15,502.58-21,392.96-8,429.02

Finding the Fourth Proportional to 15,502.58, 21,392.96 and 8,429.02

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Solution

The fourth proportional to 15,502.58, 21,392.96 and 8,429.02 is: 11,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.58 : 21,392.96 = 8,429.02 : x
  2. Step 2: Convert to fraction form
    15,502.58/21,392.96 = 8,429.02/x
  3. Step 3: Cross multiply
    15,502.58x = 21,392.96 × 8,429.02
  4. Step 4: Simplify right side
    15,502.58x = 180,321,687.70
  5. Step 5: Solve for x
    x = 180,321,687.70/15,502.58
  6. Step 6: Final answer
    x = 11,631.72

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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.