Home / 20,129.36-30,058.48-16,438.91

Finding the Fourth Proportional to 20,129.36, 30,058.48 and 16,438.91

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Solution

The fourth proportional to 20,129.36, 30,058.48 and 16,438.91 is: 24,547.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.36 : 30,058.48 = 16,438.91 : x
  2. Step 2: Convert to fraction form
    20,129.36/30,058.48 = 16,438.91/x
  3. Step 3: Cross multiply
    20,129.36x = 30,058.48 × 16,438.91
  4. Step 4: Simplify right side
    20,129.36x = 494,128,517.71
  5. Step 5: Solve for x
    x = 494,128,517.71/20,129.36
  6. Step 6: Final answer
    x = 24,547.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.