Home / 14,101.20-19,458.30-8,434.80

Finding the Fourth Proportional to 14,101.20, 19,458.30 and 8,434.80

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Solution

The fourth proportional to 14,101.20, 19,458.30 and 8,434.80 is: 11,639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,101.20 : 19,458.30 = 8,434.80 : x
  2. Step 2: Convert to fraction form
    14,101.20/19,458.30 = 8,434.80/x
  3. Step 3: Cross multiply
    14,101.20x = 19,458.30 × 8,434.80
  4. Step 4: Simplify right side
    14,101.20x = 164,126,868.84
  5. Step 5: Solve for x
    x = 164,126,868.84/14,101.20
  6. Step 6: Final answer
    x = 11,639.21

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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.