Home / 11,421.32-15,749.30-8,898.96

Finding the Fourth Proportional to 11,421.32, 15,749.30 and 8,898.96

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Solution

The fourth proportional to 11,421.32, 15,749.30 and 8,898.96 is: 12,271.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.32 : 15,749.30 = 8,898.96 : x
  2. Step 2: Convert to fraction form
    11,421.32/15,749.30 = 8,898.96/x
  3. Step 3: Cross multiply
    11,421.32x = 15,749.30 × 8,898.96
  4. Step 4: Simplify right side
    11,421.32x = 140,152,390.73
  5. Step 5: Solve for x
    x = 140,152,390.73/11,421.32
  6. Step 6: Final answer
    x = 12,271.12

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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.