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Finding the Fourth Proportional to 30,390.84, 45,593.98 and 9,331.94

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Solution

The fourth proportional to 30,390.84, 45,593.98 and 9,331.94 is: 14,000.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.84 : 45,593.98 = 9,331.94 : x
  2. Step 2: Convert to fraction form
    30,390.84/45,593.98 = 9,331.94/x
  3. Step 3: Cross multiply
    30,390.84x = 45,593.98 × 9,331.94
  4. Step 4: Simplify right side
    30,390.84x = 425,480,285.72
  5. Step 5: Solve for x
    x = 425,480,285.72/30,390.84
  6. Step 6: Final answer
    x = 14,000.28

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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.