Home / 21,005.84-28,987.76-12,053.16

Finding the Fourth Proportional to 21,005.84, 28,987.76 and 12,053.16

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Solution

The fourth proportional to 21,005.84, 28,987.76 and 12,053.16 is: 16,633.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005.84 : 28,987.76 = 12,053.16 : x
  2. Step 2: Convert to fraction form
    21,005.84/28,987.76 = 12,053.16/x
  3. Step 3: Cross multiply
    21,005.84x = 28,987.76 × 12,053.16
  4. Step 4: Simplify right side
    21,005.84x = 349,394,139.45
  5. Step 5: Solve for x
    x = 349,394,139.45/21,005.84
  6. Step 6: Final answer
    x = 16,633.19

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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.