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Finding the Fourth Proportional to 39,357.80, 59,071.26 and 21,847.40

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Solution

The fourth proportional to 39,357.80, 59,071.26 and 21,847.40 is: 32,790.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,357.80 : 59,071.26 = 21,847.40 : x
  2. Step 2: Convert to fraction form
    39,357.80/59,071.26 = 21,847.40/x
  3. Step 3: Cross multiply
    39,357.80x = 59,071.26 × 21,847.40
  4. Step 4: Simplify right side
    39,357.80x = 1,290,553,445.72
  5. Step 5: Solve for x
    x = 1,290,553,445.72/39,357.80
  6. Step 6: Final answer
    x = 32,790.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.