Home / 13,555.69-18,701.08-9,580.21

Finding the Fourth Proportional to 13,555.69, 18,701.08 and 9,580.21

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Solution

The fourth proportional to 13,555.69, 18,701.08 and 9,580.21 is: 13,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.69 : 18,701.08 = 9,580.21 : x
  2. Step 2: Convert to fraction form
    13,555.69/18,701.08 = 9,580.21/x
  3. Step 3: Cross multiply
    13,555.69x = 18,701.08 × 9,580.21
  4. Step 4: Simplify right side
    13,555.69x = 179,160,273.63
  5. Step 5: Solve for x
    x = 179,160,273.63/13,555.69
  6. Step 6: Final answer
    x = 13,216.61

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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.