Home / 39,157.55-54,036.90-21,252.40

Finding the Fourth Proportional to 39,157.55, 54,036.90 and 21,252.40

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Solution

The fourth proportional to 39,157.55, 54,036.90 and 21,252.40 is: 29,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.55 : 54,036.90 = 21,252.40 : x
  2. Step 2: Convert to fraction form
    39,157.55/54,036.90 = 21,252.40/x
  3. Step 3: Cross multiply
    39,157.55x = 54,036.90 × 21,252.40
  4. Step 4: Simplify right side
    39,157.55x = 1,148,413,770.67
  5. Step 5: Solve for x
    x = 1,148,413,770.67/39,157.55
  6. Step 6: Final answer
    x = 29,328.03

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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.