Home / 12,458.86-17,191.41-7,153.90

Finding the Fourth Proportional to 12,458.86, 17,191.41 and 7,153.90

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Solution

The fourth proportional to 12,458.86, 17,191.41 and 7,153.90 is: 9,871.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.86 : 17,191.41 = 7,153.90 : x
  2. Step 2: Convert to fraction form
    12,458.86/17,191.41 = 7,153.90/x
  3. Step 3: Cross multiply
    12,458.86x = 17,191.41 × 7,153.90
  4. Step 4: Simplify right side
    12,458.86x = 122,985,628.00
  5. Step 5: Solve for x
    x = 122,985,628.00/12,458.86
  6. Step 6: Final answer
    x = 9,871.34

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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.