Home / 13,555.20-18,698.70-9,528.22

Finding the Fourth Proportional to 13,555.20, 18,698.70 and 9,528.22

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Solution

The fourth proportional to 13,555.20, 18,698.70 and 9,528.22 is: 13,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.20 : 18,698.70 = 9,528.22 : x
  2. Step 2: Convert to fraction form
    13,555.20/18,698.70 = 9,528.22/x
  3. Step 3: Cross multiply
    13,555.20x = 18,698.70 × 9,528.22
  4. Step 4: Simplify right side
    13,555.20x = 178,165,327.31
  5. Step 5: Solve for x
    x = 178,165,327.31/13,555.20
  6. Step 6: Final answer
    x = 13,143.69

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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.