Home / 30,586.91-42,224.77-20,511.68

Finding the Fourth Proportional to 30,586.91, 42,224.77 and 20,511.68

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Solution

The fourth proportional to 30,586.91, 42,224.77 and 20,511.68 is: 28,316.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,586.91 : 42,224.77 = 20,511.68 : x
  2. Step 2: Convert to fraction form
    30,586.91/42,224.77 = 20,511.68/x
  3. Step 3: Cross multiply
    30,586.91x = 42,224.77 × 20,511.68
  4. Step 4: Simplify right side
    30,586.91x = 866,100,810.47
  5. Step 5: Solve for x
    x = 866,100,810.47/30,586.91
  6. Step 6: Final answer
    x = 28,316.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.