Home / 13,455.88-18,568.52-7,487.08

Finding the Fourth Proportional to 13,455.88, 18,568.52 and 7,487.08

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Solution

The fourth proportional to 13,455.88, 18,568.52 and 7,487.08 is: 10,331.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.88 : 18,568.52 = 7,487.08 : x
  2. Step 2: Convert to fraction form
    13,455.88/18,568.52 = 7,487.08/x
  3. Step 3: Cross multiply
    13,455.88x = 18,568.52 × 7,487.08
  4. Step 4: Simplify right side
    13,455.88x = 139,023,994.72
  5. Step 5: Solve for x
    x = 139,023,994.72/13,455.88
  6. Step 6: Final answer
    x = 10,331.84

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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.