Home / 13,314.40-18,372.48-7,345.76

Finding the Fourth Proportional to 13,314.40, 18,372.48 and 7,345.76

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Solution

The fourth proportional to 13,314.40, 18,372.48 and 7,345.76 is: 10,136.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,314.40 : 18,372.48 = 7,345.76 : x
  2. Step 2: Convert to fraction form
    13,314.40/18,372.48 = 7,345.76/x
  3. Step 3: Cross multiply
    13,314.40x = 18,372.48 × 7,345.76
  4. Step 4: Simplify right side
    13,314.40x = 134,959,828.68
  5. Step 5: Solve for x
    x = 134,959,828.68/13,314.40
  6. Step 6: Final answer
    x = 10,136.38

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Double scale
Find fourth proportional to 13,315.40, 18,373.86 and 7,346.76
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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.