Home / 10,851.40-16,238.70-9,929.80

Finding the Fourth Proportional to 10,851.40, 16,238.70 and 9,929.80

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Solution

The fourth proportional to 10,851.40, 16,238.70 and 9,929.80 is: 14,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,851.40 : 16,238.70 = 9,929.80 : x
  2. Step 2: Convert to fraction form
    10,851.40/16,238.70 = 9,929.80/x
  3. Step 3: Cross multiply
    10,851.40x = 16,238.70 × 9,929.80
  4. Step 4: Simplify right side
    10,851.40x = 161,247,043.26
  5. Step 5: Solve for x
    x = 161,247,043.26/10,851.40
  6. Step 6: Final answer
    x = 14,859.56

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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.