Home / 15,501.38-21,448.19-13,516.07

Finding the Fourth Proportional to 15,501.38, 21,448.19 and 13,516.07

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Solution

The fourth proportional to 15,501.38, 21,448.19 and 13,516.07 is: 18,701.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.38 : 21,448.19 = 13,516.07 : x
  2. Step 2: Convert to fraction form
    15,501.38/21,448.19 = 13,516.07/x
  3. Step 3: Cross multiply
    15,501.38x = 21,448.19 × 13,516.07
  4. Step 4: Simplify right side
    15,501.38x = 289,895,163.96
  5. Step 5: Solve for x
    x = 289,895,163.96/15,501.38
  6. Step 6: Final answer
    x = 18,701.25

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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.