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Finding the Fourth Proportional to 30,307.89, 45,472.79 and 15,523.77

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Solution

The fourth proportional to 30,307.89, 45,472.79 and 15,523.77 is: 23,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.89 : 45,472.79 = 15,523.77 : x
  2. Step 2: Convert to fraction form
    30,307.89/45,472.79 = 15,523.77/x
  3. Step 3: Cross multiply
    30,307.89x = 45,472.79 × 15,523.77
  4. Step 4: Simplify right side
    30,307.89x = 705,909,133.22
  5. Step 5: Solve for x
    x = 705,909,133.22/30,307.89
  6. Step 6: Final answer
    x = 23,291.27

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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.