Home / 15,709.23-21,673.29-9,738.72

Finding the Fourth Proportional to 15,709.23, 21,673.29 and 9,738.72

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Solution

The fourth proportional to 15,709.23, 21,673.29 and 9,738.72 is: 13,436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.23 : 21,673.29 = 9,738.72 : x
  2. Step 2: Convert to fraction form
    15,709.23/21,673.29 = 9,738.72/x
  3. Step 3: Cross multiply
    15,709.23x = 21,673.29 × 9,738.72
  4. Step 4: Simplify right side
    15,709.23x = 211,070,102.79
  5. Step 5: Solve for x
    x = 211,070,102.79/15,709.23
  6. Step 6: Final answer
    x = 13,436.06

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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.