Home / 21,002.37-28,983.25-11,570.93

Finding the Fourth Proportional to 21,002.37, 28,983.25 and 11,570.93

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Solution

The fourth proportional to 21,002.37, 28,983.25 and 11,570.93 is: 15,967.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.37 : 28,983.25 = 11,570.93 : x
  2. Step 2: Convert to fraction form
    21,002.37/28,983.25 = 11,570.93/x
  3. Step 3: Cross multiply
    21,002.37x = 28,983.25 × 11,570.93
  4. Step 4: Simplify right side
    21,002.37x = 335,363,135.16
  5. Step 5: Solve for x
    x = 335,363,135.16/21,002.37
  6. Step 6: Final answer
    x = 15,967.87

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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.