Home / 19,320.30-28,988.94-8,228.16

Finding the Fourth Proportional to 19,320.30, 28,988.94 and 8,228.16

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Solution

The fourth proportional to 19,320.30, 28,988.94 and 8,228.16 is: 12,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.30 : 28,988.94 = 8,228.16 : x
  2. Step 2: Convert to fraction form
    19,320.30/28,988.94 = 8,228.16/x
  3. Step 3: Cross multiply
    19,320.30x = 28,988.94 × 8,228.16
  4. Step 4: Simplify right side
    19,320.30x = 238,525,636.55
  5. Step 5: Solve for x
    x = 238,525,636.55/19,320.30
  6. Step 6: Final answer
    x = 12,345.86

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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.