Home / 18,686.74-28,038.60-7,000.84

Finding the Fourth Proportional to 18,686.74, 28,038.60 and 7,000.84

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Solution

The fourth proportional to 18,686.74, 28,038.60 and 7,000.84 is: 10,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.74 : 28,038.60 = 7,000.84 : x
  2. Step 2: Convert to fraction form
    18,686.74/28,038.60 = 7,000.84/x
  3. Step 3: Cross multiply
    18,686.74x = 28,038.60 × 7,000.84
  4. Step 4: Simplify right side
    18,686.74x = 196,293,752.42
  5. Step 5: Solve for x
    x = 196,293,752.42/18,686.74
  6. Step 6: Final answer
    x = 10,504.44

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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.