Home / 13,528.35-18,668.98-7,478.56

Finding the Fourth Proportional to 13,528.35, 18,668.98 and 7,478.56

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Solution

The fourth proportional to 13,528.35, 18,668.98 and 7,478.56 is: 10,320.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.35 : 18,668.98 = 7,478.56 : x
  2. Step 2: Convert to fraction form
    13,528.35/18,668.98 = 7,478.56/x
  3. Step 3: Cross multiply
    13,528.35x = 18,668.98 × 7,478.56
  4. Step 4: Simplify right side
    13,528.35x = 139,617,119.75
  5. Step 5: Solve for x
    x = 139,617,119.75/13,528.35
  6. Step 6: Final answer
    x = 10,320.34

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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.