Home / 21,079.48-29,089.74-11,647.84

Finding the Fourth Proportional to 21,079.48, 29,089.74 and 11,647.84

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Solution

The fourth proportional to 21,079.48, 29,089.74 and 11,647.84 is: 16,074.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.48 : 29,089.74 = 11,647.84 : x
  2. Step 2: Convert to fraction form
    21,079.48/29,089.74 = 11,647.84/x
  3. Step 3: Cross multiply
    21,079.48x = 29,089.74 × 11,647.84
  4. Step 4: Simplify right side
    21,079.48x = 338,832,637.16
  5. Step 5: Solve for x
    x = 338,832,637.16/21,079.48
  6. Step 6: Final answer
    x = 16,074.05

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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.