Home / 13,315.39-18,374.54-7,346.90

Finding the Fourth Proportional to 13,315.39, 18,374.54 and 7,346.90

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Solution

The fourth proportional to 13,315.39, 18,374.54 and 7,346.90 is: 10,138.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.39 : 18,374.54 = 7,346.90 : x
  2. Step 2: Convert to fraction form
    13,315.39/18,374.54 = 7,346.90/x
  3. Step 3: Cross multiply
    13,315.39x = 18,374.54 × 7,346.90
  4. Step 4: Simplify right side
    13,315.39x = 134,995,917.13
  5. Step 5: Solve for x
    x = 134,995,917.13/13,315.39
  6. Step 6: Final answer
    x = 10,138.34

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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.