Home / 21,011.54-28,996.04-12,058.81

Finding the Fourth Proportional to 21,011.54, 28,996.04 and 12,058.81

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Solution

The fourth proportional to 21,011.54, 28,996.04 and 12,058.81 is: 16,641.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.54 : 28,996.04 = 12,058.81 : x
  2. Step 2: Convert to fraction form
    21,011.54/28,996.04 = 12,058.81/x
  3. Step 3: Cross multiply
    21,011.54x = 28,996.04 × 12,058.81
  4. Step 4: Simplify right side
    21,011.54x = 349,657,694.77
  5. Step 5: Solve for x
    x = 349,657,694.77/21,011.54
  6. Step 6: Final answer
    x = 16,641.23

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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.