Home / 19,280.19-28,865.61-12,624.45

Finding the Fourth Proportional to 19,280.19, 28,865.61 and 12,624.45

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Solution

The fourth proportional to 19,280.19, 28,865.61 and 12,624.45 is: 18,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,280.19 : 28,865.61 = 12,624.45 : x
  2. Step 2: Convert to fraction form
    19,280.19/28,865.61 = 12,624.45/x
  3. Step 3: Cross multiply
    19,280.19x = 28,865.61 × 12,624.45
  4. Step 4: Simplify right side
    19,280.19x = 364,412,450.16
  5. Step 5: Solve for x
    x = 364,412,450.16/19,280.19
  6. Step 6: Final answer
    x = 18,900.87

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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.