Home / 13,528.44-18,669.96-7,478.64

Finding the Fourth Proportional to 13,528.44, 18,669.96 and 7,478.64

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Solution

The fourth proportional to 13,528.44, 18,669.96 and 7,478.64 is: 10,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.44 : 18,669.96 = 7,478.64 : x
  2. Step 2: Convert to fraction form
    13,528.44/18,669.96 = 7,478.64/x
  3. Step 3: Cross multiply
    13,528.44x = 18,669.96 × 7,478.64
  4. Step 4: Simplify right side
    13,528.44x = 139,625,909.65
  5. Step 5: Solve for x
    x = 139,625,909.65/13,528.44
  6. Step 6: Final answer
    x = 10,320.92

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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.