Home / 19,320.23-28,963.58-8,638.47

Finding the Fourth Proportional to 19,320.23, 28,963.58 and 8,638.47

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Solution

The fourth proportional to 19,320.23, 28,963.58 and 8,638.47 is: 12,950.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.23 : 28,963.58 = 8,638.47 : x
  2. Step 2: Convert to fraction form
    19,320.23/28,963.58 = 8,638.47/x
  3. Step 3: Cross multiply
    19,320.23x = 28,963.58 × 8,638.47
  4. Step 4: Simplify right side
    19,320.23x = 250,200,973.73
  5. Step 5: Solve for x
    x = 250,200,973.73/19,320.23
  6. Step 6: Final answer
    x = 12,950.21

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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.