Home / 14,142.86-19,517.15-7,855.23

Finding the Fourth Proportional to 14,142.86, 19,517.15 and 7,855.23

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Solution

The fourth proportional to 14,142.86, 19,517.15 and 7,855.23 is: 10,840.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.86 : 19,517.15 = 7,855.23 : x
  2. Step 2: Convert to fraction form
    14,142.86/19,517.15 = 7,855.23/x
  3. Step 3: Cross multiply
    14,142.86x = 19,517.15 × 7,855.23
  4. Step 4: Simplify right side
    14,142.86x = 153,311,702.19
  5. Step 5: Solve for x
    x = 153,311,702.19/14,142.86
  6. Step 6: Final answer
    x = 10,840.22

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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.