Home / 13,575.60-18,749.88-10,815.12

Finding the Fourth Proportional to 13,575.60, 18,749.88 and 10,815.12

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Solution

The fourth proportional to 13,575.60, 18,749.88 and 10,815.12 is: 14,937.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.60 : 18,749.88 = 10,815.12 : x
  2. Step 2: Convert to fraction form
    13,575.60/18,749.88 = 10,815.12/x
  3. Step 3: Cross multiply
    13,575.60x = 18,749.88 × 10,815.12
  4. Step 4: Simplify right side
    13,575.60x = 202,782,202.19
  5. Step 5: Solve for x
    x = 202,782,202.19/13,575.60
  6. Step 6: Final answer
    x = 14,937.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.