Home / 13,585.80-18,749.30-7,617.85

Finding the Fourth Proportional to 13,585.80, 18,749.30 and 7,617.85

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Solution

The fourth proportional to 13,585.80, 18,749.30 and 7,617.85 is: 10,513.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.80 : 18,749.30 = 7,617.85 : x
  2. Step 2: Convert to fraction form
    13,585.80/18,749.30 = 7,617.85/x
  3. Step 3: Cross multiply
    13,585.80x = 18,749.30 × 7,617.85
  4. Step 4: Simplify right side
    13,585.80x = 142,829,355.01
  5. Step 5: Solve for x
    x = 142,829,355.01/13,585.80
  6. Step 6: Final answer
    x = 10,513.14

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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.