Home / 13,313.60-19,970.40-5,520.32

Finding the Fourth Proportional to 13,313.60, 19,970.40 and 5,520.32

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Solution

The fourth proportional to 13,313.60, 19,970.40 and 5,520.32 is: 8,280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.60 : 19,970.40 = 5,520.32 : x
  2. Step 2: Convert to fraction form
    13,313.60/19,970.40 = 5,520.32/x
  3. Step 3: Cross multiply
    13,313.60x = 19,970.40 × 5,520.32
  4. Step 4: Simplify right side
    13,313.60x = 110,242,998.53
  5. Step 5: Solve for x
    x = 110,242,998.53/13,313.60
  6. Step 6: Final answer
    x = 8,280.48

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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.