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Finding the Fourth Proportional to 25,603.60, 38,434.20 and 15,221.20

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Solution

The fourth proportional to 25,603.60, 38,434.20 and 15,221.20 is: 22,848.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,603.60 : 38,434.20 = 15,221.20 : x
  2. Step 2: Convert to fraction form
    25,603.60/38,434.20 = 15,221.20/x
  3. Step 3: Cross multiply
    25,603.60x = 38,434.20 × 15,221.20
  4. Step 4: Simplify right side
    25,603.60x = 585,014,645.04
  5. Step 5: Solve for x
    x = 585,014,645.04/25,603.60
  6. Step 6: Final answer
    x = 22,848.92

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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.