Home / 21,079.51-29,088.79-11,647.87

Finding the Fourth Proportional to 21,079.51, 29,088.79 and 11,647.87

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Solution

The fourth proportional to 21,079.51, 29,088.79 and 11,647.87 is: 16,073.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.51 : 29,088.79 = 11,647.87 : x
  2. Step 2: Convert to fraction form
    21,079.51/29,088.79 = 11,647.87/x
  3. Step 3: Cross multiply
    21,079.51x = 29,088.79 × 11,647.87
  4. Step 4: Simplify right side
    21,079.51x = 338,822,444.38
  5. Step 5: Solve for x
    x = 338,822,444.38/21,079.51
  6. Step 6: Final answer
    x = 16,073.54

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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.