Home / 15,513.22-21,406.37-8,798.52

Finding the Fourth Proportional to 15,513.22, 21,406.37 and 8,798.52

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Solution

The fourth proportional to 15,513.22, 21,406.37 and 8,798.52 is: 12,140.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.22 : 21,406.37 = 8,798.52 : x
  2. Step 2: Convert to fraction form
    15,513.22/21,406.37 = 8,798.52/x
  3. Step 3: Cross multiply
    15,513.22x = 21,406.37 × 8,798.52
  4. Step 4: Simplify right side
    15,513.22x = 188,344,374.57
  5. Step 5: Solve for x
    x = 188,344,374.57/15,513.22
  6. Step 6: Final answer
    x = 12,140.89

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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.