Home / 13,318.60-19,985.10-5,528.20

Finding the Fourth Proportional to 13,318.60, 19,985.10 and 5,528.20

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Solution

The fourth proportional to 13,318.60, 19,985.10 and 5,528.20 is: 8,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.60 : 19,985.10 = 5,528.20 : x
  2. Step 2: Convert to fraction form
    13,318.60/19,985.10 = 5,528.20/x
  3. Step 3: Cross multiply
    13,318.60x = 19,985.10 × 5,528.20
  4. Step 4: Simplify right side
    13,318.60x = 110,481,629.82
  5. Step 5: Solve for x
    x = 110,481,629.82/13,318.60
  6. Step 6: Final answer
    x = 8,295.29

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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.