Home / 14,288.40-19,713.24-8,315.28

Finding the Fourth Proportional to 14,288.40, 19,713.24 and 8,315.28

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Solution

The fourth proportional to 14,288.40, 19,713.24 and 8,315.28 is: 11,472.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.40 : 19,713.24 = 8,315.28 : x
  2. Step 2: Convert to fraction form
    14,288.40/19,713.24 = 8,315.28/x
  3. Step 3: Cross multiply
    14,288.40x = 19,713.24 × 8,315.28
  4. Step 4: Simplify right side
    14,288.40x = 163,921,110.31
  5. Step 5: Solve for x
    x = 163,921,110.31/14,288.40
  6. Step 6: Final answer
    x = 11,472.32

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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.