Home / 13,269.39-18,312.20-7,301.72

Finding the Fourth Proportional to 13,269.39, 18,312.20 and 7,301.72

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Solution

The fourth proportional to 13,269.39, 18,312.20 and 7,301.72 is: 10,076.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.39 : 18,312.20 = 7,301.72 : x
  2. Step 2: Convert to fraction form
    13,269.39/18,312.20 = 7,301.72/x
  3. Step 3: Cross multiply
    13,269.39x = 18,312.20 × 7,301.72
  4. Step 4: Simplify right side
    13,269.39x = 133,710,428.91
  5. Step 5: Solve for x
    x = 133,710,428.91/13,269.39
  6. Step 6: Final answer
    x = 10,076.61

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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.