Home / 45,911.12-68,867.10-13,890.42

Finding the Fourth Proportional to 45,911.12, 68,867.10 and 13,890.42

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Solution

The fourth proportional to 45,911.12, 68,867.10 and 13,890.42 is: 20,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,911.12 : 68,867.10 = 13,890.42 : x
  2. Step 2: Convert to fraction form
    45,911.12/68,867.10 = 13,890.42/x
  3. Step 3: Cross multiply
    45,911.12x = 68,867.10 × 13,890.42
  4. Step 4: Simplify right side
    45,911.12x = 956,592,943.18
  5. Step 5: Solve for x
    x = 956,592,943.18/45,911.12
  6. Step 6: Final answer
    x = 20,835.76

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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.