Home / 11,038.20-16,538.10-7,140.60

Finding the Fourth Proportional to 11,038.20, 16,538.10 and 7,140.60

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Solution

The fourth proportional to 11,038.20, 16,538.10 and 7,140.60 is: 10,698.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,038.20 : 16,538.10 = 7,140.60 : x
  2. Step 2: Convert to fraction form
    11,038.20/16,538.10 = 7,140.60/x
  3. Step 3: Cross multiply
    11,038.20x = 16,538.10 × 7,140.60
  4. Step 4: Simplify right side
    11,038.20x = 118,091,956.86
  5. Step 5: Solve for x
    x = 118,091,956.86/11,038.20
  6. Step 6: Final answer
    x = 10,698.48

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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.