Home / 21,011.04-28,992.60-12,057.36

Finding the Fourth Proportional to 21,011.04, 28,992.60 and 12,057.36

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Solution

The fourth proportional to 21,011.04, 28,992.60 and 12,057.36 is: 16,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.04 : 28,992.60 = 12,057.36 : x
  2. Step 2: Convert to fraction form
    21,011.04/28,992.60 = 12,057.36/x
  3. Step 3: Cross multiply
    21,011.04x = 28,992.60 × 12,057.36
  4. Step 4: Simplify right side
    21,011.04x = 349,574,215.54
  5. Step 5: Solve for x
    x = 349,574,215.54/21,011.04
  6. Step 6: Final answer
    x = 16,637.64

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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.