Home / 14,289.80-21,434.70-10,353.20

Finding the Fourth Proportional to 14,289.80, 21,434.70 and 10,353.20

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Solution

The fourth proportional to 14,289.80, 21,434.70 and 10,353.20 is: 15,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.80 : 21,434.70 = 10,353.20 : x
  2. Step 2: Convert to fraction form
    14,289.80/21,434.70 = 10,353.20/x
  3. Step 3: Cross multiply
    14,289.80x = 21,434.70 × 10,353.20
  4. Step 4: Simplify right side
    14,289.80x = 221,917,736.04
  5. Step 5: Solve for x
    x = 221,917,736.04/14,289.80
  6. Step 6: Final answer
    x = 15,529.80

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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.