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Finding the Fourth Proportional to 30,603.42, 45,905.13 and 15,804.72

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Solution

The fourth proportional to 30,603.42, 45,905.13 and 15,804.72 is: 23,707.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.42 : 45,905.13 = 15,804.72 : x
  2. Step 2: Convert to fraction form
    30,603.42/45,905.13 = 15,804.72/x
  3. Step 3: Cross multiply
    30,603.42x = 45,905.13 × 15,804.72
  4. Step 4: Simplify right side
    30,603.42x = 725,517,726.21
  5. Step 5: Solve for x
    x = 725,517,726.21/30,603.42
  6. Step 6: Final answer
    x = 23,707.08

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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.