Home / 18,953.10-28,429.65-9,087.30

Finding the Fourth Proportional to 18,953.10, 28,429.65 and 9,087.30

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Solution

The fourth proportional to 18,953.10, 28,429.65 and 9,087.30 is: 13,630.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.10 : 28,429.65 = 9,087.30 : x
  2. Step 2: Convert to fraction form
    18,953.10/28,429.65 = 9,087.30/x
  3. Step 3: Cross multiply
    18,953.10x = 28,429.65 × 9,087.30
  4. Step 4: Simplify right side
    18,953.10x = 258,348,758.45
  5. Step 5: Solve for x
    x = 258,348,758.45/18,953.10
  6. Step 6: Final answer
    x = 13,630.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.