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Finding the Fourth Proportional to 30,381.99, 45,461.96 and 18,492.40

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Solution

The fourth proportional to 30,381.99, 45,461.96 and 18,492.40 is: 27,671.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,381.99 : 45,461.96 = 18,492.40 : x
  2. Step 2: Convert to fraction form
    30,381.99/45,461.96 = 18,492.40/x
  3. Step 3: Cross multiply
    30,381.99x = 45,461.96 × 18,492.40
  4. Step 4: Simplify right side
    30,381.99x = 840,700,782.82
  5. Step 5: Solve for x
    x = 840,700,782.82/30,381.99
  6. Step 6: Final answer
    x = 27,671.03

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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.