Home / 13,125.99-18,114.24-7,157.77

Finding the Fourth Proportional to 13,125.99, 18,114.24 and 7,157.77

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Solution

The fourth proportional to 13,125.99, 18,114.24 and 7,157.77 is: 9,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.99 : 18,114.24 = 7,157.77 : x
  2. Step 2: Convert to fraction form
    13,125.99/18,114.24 = 7,157.77/x
  3. Step 3: Cross multiply
    13,125.99x = 18,114.24 × 7,157.77
  4. Step 4: Simplify right side
    13,125.99x = 129,657,563.64
  5. Step 5: Solve for x
    x = 129,657,563.64/13,125.99
  6. Step 6: Final answer
    x = 9,877.93

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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.