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Finding the Fourth Proportional to 25,168.88, 37,742.40 and 12,681.20

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Solution

The fourth proportional to 25,168.88, 37,742.40 and 12,681.20 is: 19,016.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,168.88 : 37,742.40 = 12,681.20 : x
  2. Step 2: Convert to fraction form
    25,168.88/37,742.40 = 12,681.20/x
  3. Step 3: Cross multiply
    25,168.88x = 37,742.40 × 12,681.20
  4. Step 4: Simplify right side
    25,168.88x = 478,618,922.88
  5. Step 5: Solve for x
    x = 478,618,922.88/25,168.88
  6. Step 6: Final answer
    x = 19,016.30

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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.