Home / 13,143.23-19,702.08-5,243.45

Finding the Fourth Proportional to 13,143.23, 19,702.08 and 5,243.45

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Solution

The fourth proportional to 13,143.23, 19,702.08 and 5,243.45 is: 7,860.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.23 : 19,702.08 = 5,243.45 : x
  2. Step 2: Convert to fraction form
    13,143.23/19,702.08 = 5,243.45/x
  3. Step 3: Cross multiply
    13,143.23x = 19,702.08 × 5,243.45
  4. Step 4: Simplify right side
    13,143.23x = 103,306,772.87
  5. Step 5: Solve for x
    x = 103,306,772.87/13,143.23
  6. Step 6: Final answer
    x = 7,860.08

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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.