Home / 13,587.20-18,749.52-7,617.68

Finding the Fourth Proportional to 13,587.20, 18,749.52 and 7,617.68

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Solution

The fourth proportional to 13,587.20, 18,749.52 and 7,617.68 is: 10,511.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.20 : 18,749.52 = 7,617.68 : x
  2. Step 2: Convert to fraction form
    13,587.20/18,749.52 = 7,617.68/x
  3. Step 3: Cross multiply
    13,587.20x = 18,749.52 × 7,617.68
  4. Step 4: Simplify right side
    13,587.20x = 142,827,843.51
  5. Step 5: Solve for x
    x = 142,827,843.51/13,587.20
  6. Step 6: Final answer
    x = 10,511.94

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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.