Home / 21,002.36-28,983.23-11,570.92

Finding the Fourth Proportional to 21,002.36, 28,983.23 and 11,570.92

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Solution

The fourth proportional to 21,002.36, 28,983.23 and 11,570.92 is: 15,967.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.36 : 28,983.23 = 11,570.92 : x
  2. Step 2: Convert to fraction form
    21,002.36/28,983.23 = 11,570.92/x
  3. Step 3: Cross multiply
    21,002.36x = 28,983.23 × 11,570.92
  4. Step 4: Simplify right side
    21,002.36x = 335,362,613.84
  5. Step 5: Solve for x
    x = 335,362,613.84/21,002.36
  6. Step 6: Final answer
    x = 15,967.86

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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.