Home / 9,145.80-13,718.50-4,215.45

Finding the Fourth Proportional to 9,145.80, 13,718.50 and 4,215.45

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Solution

The fourth proportional to 9,145.80, 13,718.50 and 4,215.45 is: 6,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.80 : 13,718.50 = 4,215.45 : x
  2. Step 2: Convert to fraction form
    9,145.80/13,718.50 = 4,215.45/x
  3. Step 3: Cross multiply
    9,145.80x = 13,718.50 × 4,215.45
  4. Step 4: Simplify right side
    9,145.80x = 57,829,650.83
  5. Step 5: Solve for x
    x = 57,829,650.83/9,145.80
  6. Step 6: Final answer
    x = 6,323.08

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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.