Home / 11,438.10-15,784.56-6,403.50

Finding the Fourth Proportional to 11,438.10, 15,784.56 and 6,403.50

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Solution

The fourth proportional to 11,438.10, 15,784.56 and 6,403.50 is: 8,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.10 : 15,784.56 = 6,403.50 : x
  2. Step 2: Convert to fraction form
    11,438.10/15,784.56 = 6,403.50/x
  3. Step 3: Cross multiply
    11,438.10x = 15,784.56 × 6,403.50
  4. Step 4: Simplify right side
    11,438.10x = 101,076,429.96
  5. Step 5: Solve for x
    x = 101,076,429.96/11,438.10
  6. Step 6: Final answer
    x = 8,836.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.