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Finding the Fourth Proportional to 25,530.40, 35,229.88 and 14,918.88

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Solution

The fourth proportional to 25,530.40, 35,229.88 and 14,918.88 is: 20,586.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,530.40 : 35,229.88 = 14,918.88 : x
  2. Step 2: Convert to fraction form
    25,530.40/35,229.88 = 14,918.88/x
  3. Step 3: Cross multiply
    25,530.40x = 35,229.88 × 14,918.88
  4. Step 4: Simplify right side
    25,530.40x = 525,590,352.13
  5. Step 5: Solve for x
    x = 525,590,352.13/25,530.40
  6. Step 6: Final answer
    x = 20,586.84

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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.