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Finding the Fourth Proportional to 30,261.88, 45,392.82 and 9,487

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Solution

The fourth proportional to 30,261.88, 45,392.82 and 9,487 is: 14,230.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,261.88 : 45,392.82 = 9,487 : x
  2. Step 2: Convert to fraction form
    30,261.88/45,392.82 = 9,487/x
  3. Step 3: Cross multiply
    30,261.88x = 45,392.82 × 9,487
  4. Step 4: Simplify right side
    30,261.88x = 430,641,683.34
  5. Step 5: Solve for x
    x = 430,641,683.34/30,261.88
  6. Step 6: Final answer
    x = 14,230.50

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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.