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Finding the Fourth Proportional to 25,603.56, 38,410.56 and 14,515.20

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Solution

The fourth proportional to 25,603.56, 38,410.56 and 14,515.20 is: 21,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,603.56 : 38,410.56 = 14,515.20 : x
  2. Step 2: Convert to fraction form
    25,603.56/38,410.56 = 14,515.20/x
  3. Step 3: Cross multiply
    25,603.56x = 38,410.56 × 14,515.20
  4. Step 4: Simplify right side
    25,603.56x = 557,536,960.51
  5. Step 5: Solve for x
    x = 557,536,960.51/25,603.56
  6. Step 6: Final answer
    x = 21,775.76

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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.