Home / 14,114.15-21,157.40-7,877.15

Finding the Fourth Proportional to 14,114.15, 21,157.40 and 7,877.15

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Solution

The fourth proportional to 14,114.15, 21,157.40 and 7,877.15 is: 11,808.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,114.15 : 21,157.40 = 7,877.15 : x
  2. Step 2: Convert to fraction form
    14,114.15/21,157.40 = 7,877.15/x
  3. Step 3: Cross multiply
    14,114.15x = 21,157.40 × 7,877.15
  4. Step 4: Simplify right side
    14,114.15x = 166,660,006.66
  5. Step 5: Solve for x
    x = 166,660,006.66/14,114.15
  6. Step 6: Final answer
    x = 11,808.01

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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.