Home / 15,313.24-21,115.65-13,306.06

Finding the Fourth Proportional to 15,313.24, 21,115.65 and 13,306.06

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Solution

The fourth proportional to 15,313.24, 21,115.65 and 13,306.06 is: 18,347.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.24 : 21,115.65 = 13,306.06 : x
  2. Step 2: Convert to fraction form
    15,313.24/21,115.65 = 13,306.06/x
  3. Step 3: Cross multiply
    15,313.24x = 21,115.65 × 13,306.06
  4. Step 4: Simplify right side
    15,313.24x = 280,966,105.84
  5. Step 5: Solve for x
    x = 280,966,105.84/15,313.24
  6. Step 6: Final answer
    x = 18,347.92

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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.