Home / 13,306.93-18,372.12-8,278.00

Finding the Fourth Proportional to 13,306.93, 18,372.12 and 8,278.00

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Solution

The fourth proportional to 13,306.93, 18,372.12 and 8,278.00 is: 11,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.93 : 18,372.12 = 8,278.00 : x
  2. Step 2: Convert to fraction form
    13,306.93/18,372.12 = 8,278.00/x
  3. Step 3: Cross multiply
    13,306.93x = 18,372.12 × 8,278.00
  4. Step 4: Simplify right side
    13,306.93x = 152,084,332.39
  5. Step 5: Solve for x
    x = 152,084,332.39/13,306.93
  6. Step 6: Final answer
    x = 11,428.95

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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.