Home / 13,291.37-18,333.98-7,910.19

Finding the Fourth Proportional to 13,291.37, 18,333.98 and 7,910.19

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Solution

The fourth proportional to 13,291.37, 18,333.98 and 7,910.19 is: 10,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.37 : 18,333.98 = 7,910.19 : x
  2. Step 2: Convert to fraction form
    13,291.37/18,333.98 = 7,910.19/x
  3. Step 3: Cross multiply
    13,291.37x = 18,333.98 × 7,910.19
  4. Step 4: Simplify right side
    13,291.37x = 145,025,225.71
  5. Step 5: Solve for x
    x = 145,025,225.71/13,291.37
  6. Step 6: Final answer
    x = 10,911.24

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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.