Home / 30,070.71-45,081.77-12,553.65

Finding the Fourth Proportional to 30,070.71, 45,081.77 and 12,553.65

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Solution

The fourth proportional to 30,070.71, 45,081.77 and 12,553.65 is: 18,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,070.71 : 45,081.77 = 12,553.65 : x
  2. Step 2: Convert to fraction form
    30,070.71/45,081.77 = 12,553.65/x
  3. Step 3: Cross multiply
    30,070.71x = 45,081.77 × 12,553.65
  4. Step 4: Simplify right side
    30,070.71x = 565,940,699.19
  5. Step 5: Solve for x
    x = 565,940,699.19/30,070.71
  6. Step 6: Final answer
    x = 18,820.33

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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.