Home / 18,420.11-27,638.40-9,653.01

Finding the Fourth Proportional to 18,420.11, 27,638.40 and 9,653.01

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Solution

The fourth proportional to 18,420.11, 27,638.40 and 9,653.01 is: 14,483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.11 : 27,638.40 = 9,653.01 : x
  2. Step 2: Convert to fraction form
    18,420.11/27,638.40 = 9,653.01/x
  3. Step 3: Cross multiply
    18,420.11x = 27,638.40 × 9,653.01
  4. Step 4: Simplify right side
    18,420.11x = 266,793,751.58
  5. Step 5: Solve for x
    x = 266,793,751.58/18,420.11
  6. Step 6: Final answer
    x = 14,483.83

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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.