Home / 30,531.52-45,814.60-12,999.52

Finding the Fourth Proportional to 30,531.52, 45,814.60 and 12,999.52

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Solution

The fourth proportional to 30,531.52, 45,814.60 and 12,999.52 is: 19,506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.52 : 45,814.60 = 12,999.52 : x
  2. Step 2: Convert to fraction form
    30,531.52/45,814.60 = 12,999.52/x
  3. Step 3: Cross multiply
    30,531.52x = 45,814.60 × 12,999.52
  4. Step 4: Simplify right side
    30,531.52x = 595,567,808.99
  5. Step 5: Solve for x
    x = 595,567,808.99/30,531.52
  6. Step 6: Final answer
    x = 19,506.65

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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.