Home / 13,178.95-18,186.27-7,513.85

Finding the Fourth Proportional to 13,178.95, 18,186.27 and 7,513.85

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Solution

The fourth proportional to 13,178.95, 18,186.27 and 7,513.85 is: 10,368.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.95 : 18,186.27 = 7,513.85 : x
  2. Step 2: Convert to fraction form
    13,178.95/18,186.27 = 7,513.85/x
  3. Step 3: Cross multiply
    13,178.95x = 18,186.27 × 7,513.85
  4. Step 4: Simplify right side
    13,178.95x = 136,648,904.84
  5. Step 5: Solve for x
    x = 136,648,904.84/13,178.95
  6. Step 6: Final answer
    x = 10,368.72

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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.