Home / 21,074.16-29,072.47-13,516.86

Finding the Fourth Proportional to 21,074.16, 29,072.47 and 13,516.86

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Solution

The fourth proportional to 21,074.16, 29,072.47 and 13,516.86 is: 18,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.16 : 29,072.47 = 13,516.86 : x
  2. Step 2: Convert to fraction form
    21,074.16/29,072.47 = 13,516.86/x
  3. Step 3: Cross multiply
    21,074.16x = 29,072.47 × 13,516.86
  4. Step 4: Simplify right side
    21,074.16x = 392,968,506.84
  5. Step 5: Solve for x
    x = 392,968,506.84/21,074.16
  6. Step 6: Final answer
    x = 18,646.94

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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.