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Finding the Fourth Proportional to 30,401.84, 45,653.18 and 18,788.87

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Solution

The fourth proportional to 30,401.84, 45,653.18 and 18,788.87 is: 28,214.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.84 : 45,653.18 = 18,788.87 : x
  2. Step 2: Convert to fraction form
    30,401.84/45,653.18 = 18,788.87/x
  3. Step 3: Cross multiply
    30,401.84x = 45,653.18 × 18,788.87
  4. Step 4: Simplify right side
    30,401.84x = 857,771,341.90
  5. Step 5: Solve for x
    x = 857,771,341.90/30,401.84
  6. Step 6: Final answer
    x = 28,214.46

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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.