Home / 13,306.06-18,379.47-11,569.42

Finding the Fourth Proportional to 13,306.06, 18,379.47 and 11,569.42

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Solution

The fourth proportional to 13,306.06, 18,379.47 and 11,569.42 is: 15,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.06 : 18,379.47 = 11,569.42 : x
  2. Step 2: Convert to fraction form
    13,306.06/18,379.47 = 11,569.42/x
  3. Step 3: Cross multiply
    13,306.06x = 18,379.47 × 11,569.42
  4. Step 4: Simplify right side
    13,306.06x = 212,639,807.81
  5. Step 5: Solve for x
    x = 212,639,807.81/13,306.06
  6. Step 6: Final answer
    x = 15,980.67

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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.