Home / 20,553.36-28,368.38-12,058.21

Finding the Fourth Proportional to 20,553.36, 28,368.38 and 12,058.21

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Solution

The fourth proportional to 20,553.36, 28,368.38 and 12,058.21 is: 16,643.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.36 : 28,368.38 = 12,058.21 : x
  2. Step 2: Convert to fraction form
    20,553.36/28,368.38 = 12,058.21/x
  3. Step 3: Cross multiply
    20,553.36x = 28,368.38 × 12,058.21
  4. Step 4: Simplify right side
    20,553.36x = 342,071,883.40
  5. Step 5: Solve for x
    x = 342,071,883.40/20,553.36
  6. Step 6: Final answer
    x = 16,643.11

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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.