Home / 13,125.55-18,119.31-7,746.16

Finding the Fourth Proportional to 13,125.55, 18,119.31 and 7,746.16

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Solution

The fourth proportional to 13,125.55, 18,119.31 and 7,746.16 is: 10,693.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.55 : 18,119.31 = 7,746.16 : x
  2. Step 2: Convert to fraction form
    13,125.55/18,119.31 = 7,746.16/x
  3. Step 3: Cross multiply
    13,125.55x = 18,119.31 × 7,746.16
  4. Step 4: Simplify right side
    13,125.55x = 140,355,074.35
  5. Step 5: Solve for x
    x = 140,355,074.35/13,125.55
  6. Step 6: Final answer
    x = 10,693.27

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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.