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Finding the Fourth Proportional to 30,347.40, 45,521.10 and 19,849.80

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Solution

The fourth proportional to 30,347.40, 45,521.10 and 19,849.80 is: 29,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.40 : 45,521.10 = 19,849.80 : x
  2. Step 2: Convert to fraction form
    30,347.40/45,521.10 = 19,849.80/x
  3. Step 3: Cross multiply
    30,347.40x = 45,521.10 × 19,849.80
  4. Step 4: Simplify right side
    30,347.40x = 903,584,730.78
  5. Step 5: Solve for x
    x = 903,584,730.78/30,347.40
  6. Step 6: Final answer
    x = 29,774.70

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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.