Home / 13,557.42-18,716.40-8,784.18

Finding the Fourth Proportional to 13,557.42, 18,716.40 and 8,784.18

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Solution

The fourth proportional to 13,557.42, 18,716.40 and 8,784.18 is: 12,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.42 : 18,716.40 = 8,784.18 : x
  2. Step 2: Convert to fraction form
    13,557.42/18,716.40 = 8,784.18/x
  3. Step 3: Cross multiply
    13,557.42x = 18,716.40 × 8,784.18
  4. Step 4: Simplify right side
    13,557.42x = 164,408,226.55
  5. Step 5: Solve for x
    x = 164,408,226.55/13,557.42
  6. Step 6: Final answer
    x = 12,126.81

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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.