Home / 30,281.70-45,404.55-18,603.30

Finding the Fourth Proportional to 30,281.70, 45,404.55 and 18,603.30

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Solution

The fourth proportional to 30,281.70, 45,404.55 and 18,603.30 is: 27,893.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.70 : 45,404.55 = 18,603.30 : x
  2. Step 2: Convert to fraction form
    30,281.70/45,404.55 = 18,603.30/x
  3. Step 3: Cross multiply
    30,281.70x = 45,404.55 × 18,603.30
  4. Step 4: Simplify right side
    30,281.70x = 844,674,465.02
  5. Step 5: Solve for x
    x = 844,674,465.02/30,281.70
  6. Step 6: Final answer
    x = 27,893.89

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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.