Home / 13,178.60-18,186.90-7,210.27

Finding the Fourth Proportional to 13,178.60, 18,186.90 and 7,210.27

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Solution

The fourth proportional to 13,178.60, 18,186.90 and 7,210.27 is: 9,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.60 : 18,186.90 = 7,210.27 : x
  2. Step 2: Convert to fraction form
    13,178.60/18,186.90 = 7,210.27/x
  3. Step 3: Cross multiply
    13,178.60x = 18,186.90 × 7,210.27
  4. Step 4: Simplify right side
    13,178.60x = 131,132,332.48
  5. Step 5: Solve for x
    x = 131,132,332.48/13,178.60
  6. Step 6: Final answer
    x = 9,950.40

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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.