Home / 13,528.05-18,683.37-9,290.28

Finding the Fourth Proportional to 13,528.05, 18,683.37 and 9,290.28

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Solution

The fourth proportional to 13,528.05, 18,683.37 and 9,290.28 is: 12,830.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.05 : 18,683.37 = 9,290.28 : x
  2. Step 2: Convert to fraction form
    13,528.05/18,683.37 = 9,290.28/x
  3. Step 3: Cross multiply
    13,528.05x = 18,683.37 × 9,290.28
  4. Step 4: Simplify right side
    13,528.05x = 173,573,738.64
  5. Step 5: Solve for x
    x = 173,573,738.64/13,528.05
  6. Step 6: Final answer
    x = 12,830.65

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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.