Home / 20,601.50-30,870.28-14,288.70

Finding the Fourth Proportional to 20,601.50, 30,870.28 and 14,288.70

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Solution

The fourth proportional to 20,601.50, 30,870.28 and 14,288.70 is: 21,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.50 : 30,870.28 = 14,288.70 : x
  2. Step 2: Convert to fraction form
    20,601.50/30,870.28 = 14,288.70/x
  3. Step 3: Cross multiply
    20,601.50x = 30,870.28 × 14,288.70
  4. Step 4: Simplify right side
    20,601.50x = 441,096,303.46
  5. Step 5: Solve for x
    x = 441,096,303.46/20,601.50
  6. Step 6: Final answer
    x = 21,410.89

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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.