Home / 30,486.83-45,700.49-12,722.60

Finding the Fourth Proportional to 30,486.83, 45,700.49 and 12,722.60

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Solution

The fourth proportional to 30,486.83, 45,700.49 and 12,722.60 is: 19,071.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.83 : 45,700.49 = 12,722.60 : x
  2. Step 2: Convert to fraction form
    30,486.83/45,700.49 = 12,722.60/x
  3. Step 3: Cross multiply
    30,486.83x = 45,700.49 × 12,722.60
  4. Step 4: Simplify right side
    30,486.83x = 581,429,200.13
  5. Step 5: Solve for x
    x = 581,429,200.13/30,486.83
  6. Step 6: Final answer
    x = 19,071.49

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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.