Home / 12,528.21-17,288.84-6,862.91

Finding the Fourth Proportional to 12,528.21, 17,288.84 and 6,862.91

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Solution

The fourth proportional to 12,528.21, 17,288.84 and 6,862.91 is: 9,470.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.21 : 17,288.84 = 6,862.91 : x
  2. Step 2: Convert to fraction form
    12,528.21/17,288.84 = 6,862.91/x
  3. Step 3: Cross multiply
    12,528.21x = 17,288.84 × 6,862.91
  4. Step 4: Simplify right side
    12,528.21x = 118,651,752.56
  5. Step 5: Solve for x
    x = 118,651,752.56/12,528.21
  6. Step 6: Final answer
    x = 9,470.77

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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.