Home / 30,302.10-45,404.55-19,901.70

Finding the Fourth Proportional to 30,302.10, 45,404.55 and 19,901.70

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Solution

The fourth proportional to 30,302.10, 45,404.55 and 19,901.70 is: 29,820.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,302.10 : 45,404.55 = 19,901.70 : x
  2. Step 2: Convert to fraction form
    30,302.10/45,404.55 = 19,901.70/x
  3. Step 3: Cross multiply
    30,302.10x = 45,404.55 × 19,901.70
  4. Step 4: Simplify right side
    30,302.10x = 903,627,732.74
  5. Step 5: Solve for x
    x = 903,627,732.74/30,302.10
  6. Step 6: Final answer
    x = 29,820.63

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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.