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Finding the Fourth Proportional to 34,957.70, 52,415.79 and 13,886.40

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Solution

The fourth proportional to 34,957.70, 52,415.79 and 13,886.40 is: 20,821.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,957.70 : 52,415.79 = 13,886.40 : x
  2. Step 2: Convert to fraction form
    34,957.70/52,415.79 = 13,886.40/x
  3. Step 3: Cross multiply
    34,957.70x = 52,415.79 × 13,886.40
  4. Step 4: Simplify right side
    34,957.70x = 727,866,626.26
  5. Step 5: Solve for x
    x = 727,866,626.26/34,957.70
  6. Step 6: Final answer
    x = 20,821.36

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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.