Home / 15,561.81-21,458.27-10,517.29

Finding the Fourth Proportional to 15,561.81, 21,458.27 and 10,517.29

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Solution

The fourth proportional to 15,561.81, 21,458.27 and 10,517.29 is: 14,502.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.81 : 21,458.27 = 10,517.29 : x
  2. Step 2: Convert to fraction form
    15,561.81/21,458.27 = 10,517.29/x
  3. Step 3: Cross multiply
    15,561.81x = 21,458.27 × 10,517.29
  4. Step 4: Simplify right side
    15,561.81x = 225,682,821.14
  5. Step 5: Solve for x
    x = 225,682,821.14/15,561.81
  6. Step 6: Final answer
    x = 14,502.35

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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.