Home / 13,155.70-19,734.56-4,390.62

Finding the Fourth Proportional to 13,155.70, 19,734.56 and 4,390.62

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Solution

The fourth proportional to 13,155.70, 19,734.56 and 4,390.62 is: 6,586.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.70 : 19,734.56 = 4,390.62 : x
  2. Step 2: Convert to fraction form
    13,155.70/19,734.56 = 4,390.62/x
  3. Step 3: Cross multiply
    13,155.70x = 19,734.56 × 4,390.62
  4. Step 4: Simplify right side
    13,155.70x = 86,646,953.83
  5. Step 5: Solve for x
    x = 86,646,953.83/13,155.70
  6. Step 6: Final answer
    x = 6,586.27

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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.