Home / 21,058.20-29,050.38-12,555.48

Finding the Fourth Proportional to 21,058.20, 29,050.38 and 12,555.48

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Solution

The fourth proportional to 21,058.20, 29,050.38 and 12,555.48 is: 17,320.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.20 : 29,050.38 = 12,555.48 : x
  2. Step 2: Convert to fraction form
    21,058.20/29,050.38 = 12,555.48/x
  3. Step 3: Cross multiply
    21,058.20x = 29,050.38 × 12,555.48
  4. Step 4: Simplify right side
    21,058.20x = 364,741,465.08
  5. Step 5: Solve for x
    x = 364,741,465.08/21,058.20
  6. Step 6: Final answer
    x = 17,320.64

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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.