Home / 13,303.76-18,360.48-9,940.74

Finding the Fourth Proportional to 13,303.76, 18,360.48 and 9,940.74

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Solution

The fourth proportional to 13,303.76, 18,360.48 and 9,940.74 is: 13,719.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,303.76 : 18,360.48 = 9,940.74 : x
  2. Step 2: Convert to fraction form
    13,303.76/18,360.48 = 9,940.74/x
  3. Step 3: Cross multiply
    13,303.76x = 18,360.48 × 9,940.74
  4. Step 4: Simplify right side
    13,303.76x = 182,516,757.96
  5. Step 5: Solve for x
    x = 182,516,757.96/13,303.76
  6. Step 6: Final answer
    x = 13,719.19

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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.