Home / 13,581.60-18,758.16-10,821.12

Finding the Fourth Proportional to 13,581.60, 18,758.16 and 10,821.12

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Solution

The fourth proportional to 13,581.60, 18,758.16 and 10,821.12 is: 14,945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.60 : 18,758.16 = 10,821.12 : x
  2. Step 2: Convert to fraction form
    13,581.60/18,758.16 = 10,821.12/x
  3. Step 3: Cross multiply
    13,581.60x = 18,758.16 × 10,821.12
  4. Step 4: Simplify right side
    13,581.60x = 202,984,300.34
  5. Step 5: Solve for x
    x = 202,984,300.34/13,581.60
  6. Step 6: Final answer
    x = 14,945.54

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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.