Home / 18,953.08-28,429.62-6,638.20

Finding the Fourth Proportional to 18,953.08, 28,429.62 and 6,638.20

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Solution

The fourth proportional to 18,953.08, 28,429.62 and 6,638.20 is: 9,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.08 : 28,429.62 = 6,638.20 : x
  2. Step 2: Convert to fraction form
    18,953.08/28,429.62 = 6,638.20/x
  3. Step 3: Cross multiply
    18,953.08x = 28,429.62 × 6,638.20
  4. Step 4: Simplify right side
    18,953.08x = 188,721,503.48
  5. Step 5: Solve for x
    x = 188,721,503.48/18,953.08
  6. Step 6: Final answer
    x = 9,957.30

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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.