Home / 20,325.43-28,058.30-15,291.23

Finding the Fourth Proportional to 20,325.43, 28,058.30 and 15,291.23

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Solution

The fourth proportional to 20,325.43, 28,058.30 and 15,291.23 is: 21,108.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.43 : 28,058.30 = 15,291.23 : x
  2. Step 2: Convert to fraction form
    20,325.43/28,058.30 = 15,291.23/x
  3. Step 3: Cross multiply
    20,325.43x = 28,058.30 × 15,291.23
  4. Step 4: Simplify right side
    20,325.43x = 429,045,917.13
  5. Step 5: Solve for x
    x = 429,045,917.13/20,325.43
  6. Step 6: Final answer
    x = 21,108.82

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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.