Home / 20,624.40-30,931.20-14,049.36

Finding the Fourth Proportional to 20,624.40, 30,931.20 and 14,049.36

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Solution

The fourth proportional to 20,624.40, 30,931.20 and 14,049.36 is: 21,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,624.40 : 30,931.20 = 14,049.36 : x
  2. Step 2: Convert to fraction form
    20,624.40/30,931.20 = 14,049.36/x
  3. Step 3: Cross multiply
    20,624.40x = 30,931.20 × 14,049.36
  4. Step 4: Simplify right side
    20,624.40x = 434,563,564.03
  5. Step 5: Solve for x
    x = 434,563,564.03/20,624.40
  6. Step 6: Final answer
    x = 21,070.36

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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.