Home / 12,306.90-18,364.31-10,981.52

Finding the Fourth Proportional to 12,306.90, 18,364.31 and 10,981.52

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Solution

The fourth proportional to 12,306.90, 18,364.31 and 10,981.52 is: 16,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.90 : 18,364.31 = 10,981.52 : x
  2. Step 2: Convert to fraction form
    12,306.90/18,364.31 = 10,981.52/x
  3. Step 3: Cross multiply
    12,306.90x = 18,364.31 × 10,981.52
  4. Step 4: Simplify right side
    12,306.90x = 201,667,890.82
  5. Step 5: Solve for x
    x = 201,667,890.82/12,306.90
  6. Step 6: Final answer
    x = 16,386.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.