Home / 13,125-19,674.96-4,355.16

Finding the Fourth Proportional to 13,125, 19,674.96 and 4,355.16

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Solution

The fourth proportional to 13,125, 19,674.96 and 4,355.16 is: 6,528.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125 : 19,674.96 = 4,355.16 : x
  2. Step 2: Convert to fraction form
    13,125/19,674.96 = 4,355.16/x
  3. Step 3: Cross multiply
    13,125x = 19,674.96 × 4,355.16
  4. Step 4: Simplify right side
    13,125x = 85,687,598.79
  5. Step 5: Solve for x
    x = 85,687,598.79/13,125
  6. Step 6: Final answer
    x = 6,528.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.