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Finding the Fourth Proportional to 30,017.61, 45,028.69 and 8,955.99

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Solution

The fourth proportional to 30,017.61, 45,028.69 and 8,955.99 is: 13,434.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,017.61 : 45,028.69 = 8,955.99 : x
  2. Step 2: Convert to fraction form
    30,017.61/45,028.69 = 8,955.99/x
  3. Step 3: Cross multiply
    30,017.61x = 45,028.69 × 8,955.99
  4. Step 4: Simplify right side
    30,017.61x = 403,276,474.96
  5. Step 5: Solve for x
    x = 403,276,474.96/30,017.61
  6. Step 6: Final answer
    x = 13,434.66

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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.