Home / 13,777.10-20,654.10-6,386.84

Finding the Fourth Proportional to 13,777.10, 20,654.10 and 6,386.84

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Solution

The fourth proportional to 13,777.10, 20,654.10 and 6,386.84 is: 9,574.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.10 : 20,654.10 = 6,386.84 : x
  2. Step 2: Convert to fraction form
    13,777.10/20,654.10 = 6,386.84/x
  3. Step 3: Cross multiply
    13,777.10x = 20,654.10 × 6,386.84
  4. Step 4: Simplify right side
    13,777.10x = 131,914,432.04
  5. Step 5: Solve for x
    x = 131,914,432.04/13,777.10
  6. Step 6: Final answer
    x = 9,574.91

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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.