Home / 15,313.39-21,134.79-9,348.54

Finding the Fourth Proportional to 15,313.39, 21,134.79 and 9,348.54

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Solution

The fourth proportional to 15,313.39, 21,134.79 and 9,348.54 is: 12,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.39 : 21,134.79 = 9,348.54 : x
  2. Step 2: Convert to fraction form
    15,313.39/21,134.79 = 9,348.54/x
  3. Step 3: Cross multiply
    15,313.39x = 21,134.79 × 9,348.54
  4. Step 4: Simplify right side
    15,313.39x = 197,579,429.71
  5. Step 5: Solve for x
    x = 197,579,429.71/15,313.39
  6. Step 6: Final answer
    x = 12,902.40

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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.