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Finding the Fourth Proportional to 25,307.60, 37,961.40 and 13,643.60

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Solution

The fourth proportional to 25,307.60, 37,961.40 and 13,643.60 is: 20,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,307.60 : 37,961.40 = 13,643.60 : x
  2. Step 2: Convert to fraction form
    25,307.60/37,961.40 = 13,643.60/x
  3. Step 3: Cross multiply
    25,307.60x = 37,961.40 × 13,643.60
  4. Step 4: Simplify right side
    25,307.60x = 517,930,157.04
  5. Step 5: Solve for x
    x = 517,930,157.04/25,307.60
  6. Step 6: Final answer
    x = 20,465.40

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Similar ratio
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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.