Home / 13,125.40-19,690.62-4,243.12

Finding the Fourth Proportional to 13,125.40, 19,690.62 and 4,243.12

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Solution

The fourth proportional to 13,125.40, 19,690.62 and 4,243.12 is: 6,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.40 : 19,690.62 = 4,243.12 : x
  2. Step 2: Convert to fraction form
    13,125.40/19,690.62 = 4,243.12/x
  3. Step 3: Cross multiply
    13,125.40x = 19,690.62 × 4,243.12
  4. Step 4: Simplify right side
    13,125.40x = 83,549,663.53
  5. Step 5: Solve for x
    x = 83,549,663.53/13,125.40
  6. Step 6: Final answer
    x = 6,365.49

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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.