Home / 13,587.10-18,749.76-7,619.10

Finding the Fourth Proportional to 13,587.10, 18,749.76 and 7,619.10

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Solution

The fourth proportional to 13,587.10, 18,749.76 and 7,619.10 is: 10,514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.10 : 18,749.76 = 7,619.10 : x
  2. Step 2: Convert to fraction form
    13,587.10/18,749.76 = 7,619.10/x
  3. Step 3: Cross multiply
    13,587.10x = 18,749.76 × 7,619.10
  4. Step 4: Simplify right side
    13,587.10x = 142,856,296.42
  5. Step 5: Solve for x
    x = 142,856,296.42/13,587.10
  6. Step 6: Final answer
    x = 10,514.11

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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.