Home / 39,131.16-54,000.06-21,225.72

Finding the Fourth Proportional to 39,131.16, 54,000.06 and 21,225.72

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Solution

The fourth proportional to 39,131.16, 54,000.06 and 21,225.72 is: 29,290.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,131.16 : 54,000.06 = 21,225.72 : x
  2. Step 2: Convert to fraction form
    39,131.16/54,000.06 = 21,225.72/x
  3. Step 3: Cross multiply
    39,131.16x = 54,000.06 × 21,225.72
  4. Step 4: Simplify right side
    39,131.16x = 1,146,190,153.54
  5. Step 5: Solve for x
    x = 1,146,190,153.54/39,131.16
  6. Step 6: Final answer
    x = 29,290.98

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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.