Home / 13,155.60-19,736.56-4,390.60

Finding the Fourth Proportional to 13,155.60, 19,736.56 and 4,390.60

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Solution

The fourth proportional to 13,155.60, 19,736.56 and 4,390.60 is: 6,586.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.60 : 19,736.56 = 4,390.60 : x
  2. Step 2: Convert to fraction form
    13,155.60/19,736.56 = 4,390.60/x
  3. Step 3: Cross multiply
    13,155.60x = 19,736.56 × 4,390.60
  4. Step 4: Simplify right side
    13,155.60x = 86,655,340.34
  5. Step 5: Solve for x
    x = 86,655,340.34/13,155.60
  6. Step 6: Final answer
    x = 6,586.95

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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.