Home / 9,513.15-13,127.26-6,440.75

Finding the Fourth Proportional to 9,513.15, 13,127.26 and 6,440.75

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Solution

The fourth proportional to 9,513.15, 13,127.26 and 6,440.75 is: 8,887.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,513.15 : 13,127.26 = 6,440.75 : x
  2. Step 2: Convert to fraction form
    9,513.15/13,127.26 = 6,440.75/x
  3. Step 3: Cross multiply
    9,513.15x = 13,127.26 × 6,440.75
  4. Step 4: Simplify right side
    9,513.15x = 84,549,453.25
  5. Step 5: Solve for x
    x = 84,549,453.25/9,513.15
  6. Step 6: Final answer
    x = 8,887.64

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Half scale
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Double scale
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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.